chore: regens API reference docs (#889)

diff --git a/docs/dyn/compute_alpha.routers.html b/docs/dyn/compute_alpha.routers.html
index c62c12b..7ba4390 100644
--- a/docs/dyn/compute_alpha.routers.html
+++ b/docs/dyn/compute_alpha.routers.html
@@ -75,7 +75,7 @@
 <h1><a href="compute_alpha.html">Compute Engine API</a> . <a href="compute_alpha.routers.html">routers</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#aggregatedList">aggregatedList(project, orderBy=None, maxResults=None, pageToken=None, filter=None)</a></code></p>
+  <code><a href="#aggregatedList">aggregatedList(project, orderBy=None, maxResults=None, pageToken=None, returnPartialSuccess=None, filter=None, includeAllScopes=None)</a></code></p>
 <p class="firstline">Retrieves an aggregated list of routers.</p>
 <p class="toc_element">
   <code><a href="#aggregatedList_next">aggregatedList_next(previous_request, previous_response)</a></code></p>
@@ -87,7 +87,7 @@
   <code><a href="#get">get(project, region, router)</a></code></p>
 <p class="firstline">Returns the specified Router resource. Gets a list of available routers by making a list() request.</p>
 <p class="toc_element">
-  <code><a href="#getNatMappingInfo">getNatMappingInfo(project, region, router, orderBy=None, maxResults=None, pageToken=None, natName=None, filter=None)</a></code></p>
+  <code><a href="#getNatMappingInfo">getNatMappingInfo(project, region, router, orderBy=None, maxResults=None, pageToken=None, returnPartialSuccess=None, natName=None, filter=None)</a></code></p>
 <p class="firstline">Retrieves runtime Nat mapping information of VM endpoints.</p>
 <p class="toc_element">
   <code><a href="#getNatMappingInfo_next">getNatMappingInfo_next(previous_request, previous_response)</a></code></p>
@@ -96,47 +96,49 @@
   <code><a href="#getRouterStatus">getRouterStatus(project, region, router)</a></code></p>
 <p class="firstline">Retrieves runtime information of the specified router.</p>
 <p class="toc_element">
-  <code><a href="#insert">insert(project, region, body, requestId=None)</a></code></p>
+  <code><a href="#insert">insert(project, region, body=None, requestId=None)</a></code></p>
 <p class="firstline">Creates a Router resource in the specified project and region using the data included in the request.</p>
 <p class="toc_element">
-  <code><a href="#list">list(project, region, orderBy=None, maxResults=None, pageToken=None, filter=None)</a></code></p>
+  <code><a href="#list">list(project, region, orderBy=None, maxResults=None, pageToken=None, returnPartialSuccess=None, filter=None)</a></code></p>
 <p class="firstline">Retrieves a list of Router resources available to the specified project.</p>
 <p class="toc_element">
   <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
 <p class="firstline">Retrieves the next page of results.</p>
 <p class="toc_element">
-  <code><a href="#patch">patch(project, region, router, body, requestId=None)</a></code></p>
+  <code><a href="#patch">patch(project, region, router, body=None, requestId=None)</a></code></p>
 <p class="firstline">Patches the specified Router resource with the data included in the request. This method supports PATCH semantics and uses JSON merge patch format and processing rules.</p>
 <p class="toc_element">
-  <code><a href="#preview">preview(project, region, router, body)</a></code></p>
+  <code><a href="#preview">preview(project, region, router, body=None)</a></code></p>
 <p class="firstline">Preview fields auto-generated during router create and update operations. Calling this method does NOT create or update the router.</p>
 <p class="toc_element">
-  <code><a href="#testIamPermissions">testIamPermissions(project, region, resource, body)</a></code></p>
+  <code><a href="#testIamPermissions">testIamPermissions(project, region, resource, body=None)</a></code></p>
 <p class="firstline">Returns permissions that a caller has on the specified resource.</p>
 <p class="toc_element">
-  <code><a href="#update">update(project, region, router, body, requestId=None)</a></code></p>
-<p class="firstline">Updates the specified Router resource with the data included in the request.</p>
+  <code><a href="#update">update(project, region, router, body=None, requestId=None)</a></code></p>
+<p class="firstline">Updates the specified Router resource with the data included in the request. This method conforms to PUT semantics, which requests that the state of the target resource be created or replaced with the state defined by the representation enclosed in the request message payload.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="aggregatedList">aggregatedList(project, orderBy=None, maxResults=None, pageToken=None, filter=None)</code>
+    <code class="details" id="aggregatedList">aggregatedList(project, orderBy=None, maxResults=None, pageToken=None, returnPartialSuccess=None, filter=None, includeAllScopes=None)</code>
   <pre>Retrieves an aggregated list of routers.
 
 Args:
   project: string, Project ID for this request. (required)
   orderBy: string, Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name.
 
-You can also sort results in descending order based on the creation timestamp using orderBy="creationTimestamp desc". This sorts results based on the creationTimestamp field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first.
+You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first.
 
-Currently, only sorting by name or creationTimestamp desc is supported.
-  maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than maxResults, Compute Engine returns a nextPageToken that can be used to get the next page of results in subsequent list requests. Acceptable values are 0 to 500, inclusive. (Default: 500)
-  pageToken: string, Specifies a page token to use. Set pageToken to the nextPageToken returned by a previous list request to get the next page of results.
-  filter: string, A filter expression that filters resources listed in the response. The expression must specify the field name, a comparison operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The comparison operator must be either =, !=, >, or <.
+Currently, only sorting by `name` or `creationTimestamp desc` is supported.
+  maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than `maxResults`, Compute Engine returns a `nextPageToken` that can be used to get the next page of results in subsequent list requests. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
+  pageToken: string, Specifies a page token to use. Set `pageToken` to the `nextPageToken` returned by a previous list request to get the next page of results.
+  returnPartialSuccess: boolean, Opt-in for partial success behavior which provides partial results in case of failure. The default value is false and the logic is the same as today.
+  filter: string, A filter expression that filters resources listed in the response. The expression must specify the field name, a comparison operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The comparison operator must be either `=`, `!=`, `&gt;`, or `&lt;`.
 
-For example, if you are filtering Compute Engine instances, you can exclude instances named example-instance by specifying name != example-instance.
+For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`.
 
-You can also filter nested fields. For example, you could specify scheduling.automaticRestart = false to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels.
+You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels.
 
-To filter on multiple expressions, provide each separate expression within parentheses. For example, (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake"). By default, each expression is an AND expression. However, you can include AND and OR expressions explicitly. For example, (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true).
+To filter on multiple expressions, provide each separate expression within parentheses. For example: ``` (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake") ``` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: ``` (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true) ```
+  includeAllScopes: boolean, Indicates whether every visible scope for each scope type (zone, region, global) should be included in the response. For new resource types added after this field, the flag has no effect as new resource types will always include every visible scope for each scope type in response. For resource types which predate this field, if this flag is omitted or false, only scopes of the scope types where the resource type is expected to be found will be included.
 
 Returns:
   An object of the form:
@@ -157,12 +159,36 @@
                   "drainNatIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT only.
                     "A String",
                   ],
-                  "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+                  "enableEndpointIndependentMapping": True or False,
                   "natIps": [ # A list of URLs of the IP resources used for this Nat service. These IP addresses must be valid static external IP addresses assigned to the project.
                     "A String",
                   ],
                   "name": "A String", # Unique name of this Nat service. The name must be 1-63 characters long and comply with RFC1035.
                   "tcpTransitoryIdleTimeoutSec": 42, # Timeout (in seconds) for TCP transitory connections. Defaults to 30s if not set.
+                  "rules": [ # A list of rules associated with this NAT.
+                    {
+                      "action": { # The action to be enforced for traffic that matches this rule.
+                        "sourceNatDrainIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT rule only.
+                          "A String",
+                        ],
+                        "sourceNatActiveIps": [ # A list of URLs of the IP resources used for this NAT rule. These IP addresses must be valid static external IP addresses assigned to the project.
+                          "A String",
+                        ],
+                      },
+                      "priority": 42, # An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 65000. The priority must be unique among rules within a NAT.
+                      "description": "A String", # An optional description of this rule.
+                      "match": "A String", # CEL expression that specifies the match condition that egress traffic from a VM is evaluated against. If it evaluates to true, the corresponding ?action? is enforced.
+                          #
+                          # The following examples are valid match expressions:
+                          #
+                          # "inIpRange(destination.ip, '1.1.0.0/16') || inIpRange(destination.ip, '2.2.0.0/16')"
+                          #
+                          # "destination.ip == '1.1.0.1' || destination.ip == '8.8.8.8'"
+                    },
+                  ],
+                  "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
+                  "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+                  "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
                   "subnetworks": [ # A list of Subnetwork resources whose traffic should be translated by NAT Gateway. It is used only when LIST_OF_SUBNETWORKS is selected for the SubnetworkIpRangeToNatOption above.
                     { # Defines the IP ranges that want to use NAT for a subnetwork.
                       "sourceIpRangesToNat": [ # Specify the options for NAT ranges in the Subnetwork. All options of a single value are valid except NAT_IP_RANGE_OPTION_UNSPECIFIED. The only valid option with multiple values is: ["PRIMARY_IP_RANGE", "LIST_OF_SECONDARY_IP_RANGES"] Default: [ALL_IP_RANGES]
@@ -174,17 +200,19 @@
                       ],
                     },
                   ],
-                  "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
-                  "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
-                      # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
-                      # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
                   "sourceSubnetworkIpRangesToNat": "A String", # Specify the Nat option, which can take one of the following values:
                       # - ALL_SUBNETWORKS_ALL_IP_RANGES: All of the IP ranges in every Subnetwork are allowed to Nat.
                       # - ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES: All of the primary IP ranges in every Subnetwork are allowed to Nat.
                       # - LIST_OF_SUBNETWORKS: A list of Subnetworks are allowed to Nat (specified in the field subnetwork below) The default is SUBNETWORK_IP_RANGE_TO_NAT_OPTION_UNSPECIFIED. Note that if this field contains ALL_SUBNETWORKS_ALL_IP_RANGES or ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES, then there should not be any other Router.Nat section in any Router for this network in this region.
-                  "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
+                  "tcpTimeWaitTimeoutSec": 42, # Timeout (in seconds) for TCP connections that are in TIME_WAIT state. Defaults to 120s if not set.
+                  "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
+                      # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
+                      # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
                   "logConfig": { # Configuration of logging on a NAT. # Configure logging on this NAT.
-                    "filter": "A String", # Specifies the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT.
+                    "filter": "A String", # Specify the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT. This option can take one of the following values:
+                        # - ERRORS_ONLY: Export logs only for connection failures.
+                        # - TRANSLATIONS_ONLY: Export logs only for successful connections.
+                        # - ALL: Export logs for all connections, successful and unsuccessful.
                     "enable": True or False, # Indicates whether or not to export logs. This is false by default.
                   },
                   "minPortsPerVm": 42, # Minimum number of ports allocated to a VM from this NAT config. If not set, a default number of ports is allocated to a VM. This is rounded up to the nearest power of 2. For example, if the value of this field is 50, at least 64 ports are allocated to a VM.
@@ -192,10 +220,10 @@
               ],
               "interfaces": [ # Router interfaces. Each interface requires either one linked resource, (for example, linkedVpnTunnel), or IP address and IP address range (for example, ipRange), or both.
                 {
-                  "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be either be a VPN tunnel or an Interconnect attachment.
-                  "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be either a VPN tunnel or an Interconnect attachment.
+                  "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
+                  "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
                   "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP address space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
-                  "name": "A String", # Name of this interface entry. The name must be 1-63 characters long and comply with RFC1035.
+                  "name": "A String", # Name of this interface entry. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
                   "managementType": "A String", # [Output Only] The resource that configures and manages this interface.
                       # - MANAGED_BY_USER is the default value and can be managed directly by users.
                       # - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
@@ -210,7 +238,7 @@
                     "description": "A String", # User-specified description for the IP range.
                   },
                 ],
-                "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer?s hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
+                "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer's hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
                 "advertisedGroups": [ # User-specified list of prefix groups to advertise in custom mode. This field can only be populated if advertise_mode is CUSTOM and is advertised to all peers of the router. These groups will be advertised in addition to any specified prefixes. Leave this field blank to advertise no custom groups.
                   "A String",
                 ],
@@ -222,13 +250,13 @@
                   "enable": "A String", # The status of the BGP peer connection. If set to FALSE, any active session with the peer is terminated and all associated routing information is removed. If set to TRUE, the peer connection can be established with routing information. The default is TRUE.
                   "peerAsn": 42, # Peer BGP Autonomous System Number (ASN). Each BGP interface may use a different value.
                   "interfaceName": "A String", # Name of the interface the BGP peer is associated with.
-                  "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long and comply with RFC1035.
+                  "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
                   "bfd": { # BFD configuration for the BGP peering.
                     "sessionInitializationMode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-                    "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by this router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+                    "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
                     "packetMode": "A String", # The BFD packet mode for this BGP peer. If set to CONTROL_AND_ECHO, BFD echo mode is enabled for this BGP peer. In this mode, if the peer router also has BFD echo mode enabled, BFD echo packets will be sent to the other router. If the peer router does not have BFD echo mode enabled, only control packets will be sent. If set to CONTROL_ONLY, BFD echo mode is disabled for this BGP peer. If this router and the peer router have a multihop connection, this should be set to CONTROL_ONLY as BFD echo mode is only supported on singlehop connections. The default is CONTROL_AND_ECHO.
                     "mode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-                    "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by the peer router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+                    "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD control packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
                     "multiplier": 42, # The number of consecutive BFD packets that must be missed before BFD declares that a peer is unavailable. If set, the value must be a value between 2 and 16. The default is 3.
                     "slowTimerInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to and received from the peer router when BFD echo mode is enabled on both routers. The actual transmit and receive intervals are negotiated between the two routers and are equal to the greater of this value and the corresponding interval on the other router. If set, this value must be between 1000 and 30000. The default is 5000.
                   },
@@ -284,6 +312,9 @@
         },
       ],
     },
+    "unreachables": [ # [Output Only] Unreachable resources.
+      "A String",
+    ],
     "id": "A String", # [Output Only] Unique identifier for the resource; defined by the server.
     "selfLink": "A String", # [Output Only] Server-defined URL for this resource.
   }</pre>
@@ -322,26 +353,30 @@
 
     { # Represents an Operation resource.
       #
+      # Google Compute Engine has three Operation resources:
+      #
+      # * [Global](/compute/docs/reference/rest/{$api_version}/globalOperations) * [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations) * [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)
+      #
       # You can use an operation resource to manage asynchronous API requests. For more information, read Handling API responses.
       #
       # Operations can be global, regional or zonal.
-      # - For global operations, use the globalOperations resource.
-      # - For regional operations, use the regionOperations resource.
-      # - For zonal operations, use the zonalOperations resource.
+      # - For global operations, use the `globalOperations` resource.
+      # - For regional operations, use the `regionOperations` resource.
+      # - For zonal operations, use the `zonalOperations` resource.
       #
-      # For more information, read  Global, Regional, and Zonal Resources. (== resource_for v1.globalOperations ==) (== resource_for beta.globalOperations ==) (== resource_for v1.regionOperations ==) (== resource_for beta.regionOperations ==) (== resource_for v1.zoneOperations ==) (== resource_for beta.zoneOperations ==)
+      # For more information, read  Global, Regional, and Zonal Resources. (== resource_for {$api_version}.globalOperations ==) (== resource_for {$api_version}.regionOperations ==) (== resource_for {$api_version}.zoneOperations ==)
     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
     "clientOperationId": "A String", # [Output Only] The value of `requestId` if you provided it in the request. Not present otherwise.
     "creationTimestamp": "A String", # [Deprecated] This field is deprecated.
-    "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
+    "id": "A String", # [Output Only] The unique identifier for the operation. This identifier is defined by the server.
     "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only applicable when performing per-zone operations.
     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
-    "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
-    "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
+    "operationType": "A String", # [Output Only] The type of operation, such as `insert`, `update`, or `delete`, and so on.
+    "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as `NOT FOUND`.
     "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
-    "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
+    "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a `404` means the resource was not found.
     "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
-    "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
+    "status": "A String", # [Output Only] The status of the operation, which can be one of the following: `PENDING`, `RUNNING`, or `DONE`.
     "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
     "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
       {
@@ -357,10 +392,10 @@
       },
     ],
     "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
-    "user": "A String", # [Output Only] User who requested the operation, for example: user@example.com.
+    "user": "A String", # [Output Only] User who requested the operation, for example: `user@example.com`.
     "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
-    "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
-    "name": "A String", # [Output Only] Name of the resource.
+    "kind": "compute#operation", # [Output Only] Type of the resource. Always `compute#operation` for Operation resources.
+    "name": "A String", # [Output Only] Name of the operation.
     "region": "A String", # [Output Only] The URL of the region where the operation resides. Only applicable when performing regional operations.
     "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
       "errors": [ # [Output Only] The array of errors encountered while processing this operation.
@@ -399,12 +434,36 @@
           "drainNatIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT only.
             "A String",
           ],
-          "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+          "enableEndpointIndependentMapping": True or False,
           "natIps": [ # A list of URLs of the IP resources used for this Nat service. These IP addresses must be valid static external IP addresses assigned to the project.
             "A String",
           ],
           "name": "A String", # Unique name of this Nat service. The name must be 1-63 characters long and comply with RFC1035.
           "tcpTransitoryIdleTimeoutSec": 42, # Timeout (in seconds) for TCP transitory connections. Defaults to 30s if not set.
+          "rules": [ # A list of rules associated with this NAT.
+            {
+              "action": { # The action to be enforced for traffic that matches this rule.
+                "sourceNatDrainIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT rule only.
+                  "A String",
+                ],
+                "sourceNatActiveIps": [ # A list of URLs of the IP resources used for this NAT rule. These IP addresses must be valid static external IP addresses assigned to the project.
+                  "A String",
+                ],
+              },
+              "priority": 42, # An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 65000. The priority must be unique among rules within a NAT.
+              "description": "A String", # An optional description of this rule.
+              "match": "A String", # CEL expression that specifies the match condition that egress traffic from a VM is evaluated against. If it evaluates to true, the corresponding ?action? is enforced.
+                  #
+                  # The following examples are valid match expressions:
+                  #
+                  # "inIpRange(destination.ip, '1.1.0.0/16') || inIpRange(destination.ip, '2.2.0.0/16')"
+                  #
+                  # "destination.ip == '1.1.0.1' || destination.ip == '8.8.8.8'"
+            },
+          ],
+          "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
+          "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+          "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
           "subnetworks": [ # A list of Subnetwork resources whose traffic should be translated by NAT Gateway. It is used only when LIST_OF_SUBNETWORKS is selected for the SubnetworkIpRangeToNatOption above.
             { # Defines the IP ranges that want to use NAT for a subnetwork.
               "sourceIpRangesToNat": [ # Specify the options for NAT ranges in the Subnetwork. All options of a single value are valid except NAT_IP_RANGE_OPTION_UNSPECIFIED. The only valid option with multiple values is: ["PRIMARY_IP_RANGE", "LIST_OF_SECONDARY_IP_RANGES"] Default: [ALL_IP_RANGES]
@@ -416,17 +475,19 @@
               ],
             },
           ],
-          "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
-          "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
-              # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
-              # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
           "sourceSubnetworkIpRangesToNat": "A String", # Specify the Nat option, which can take one of the following values:
               # - ALL_SUBNETWORKS_ALL_IP_RANGES: All of the IP ranges in every Subnetwork are allowed to Nat.
               # - ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES: All of the primary IP ranges in every Subnetwork are allowed to Nat.
               # - LIST_OF_SUBNETWORKS: A list of Subnetworks are allowed to Nat (specified in the field subnetwork below) The default is SUBNETWORK_IP_RANGE_TO_NAT_OPTION_UNSPECIFIED. Note that if this field contains ALL_SUBNETWORKS_ALL_IP_RANGES or ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES, then there should not be any other Router.Nat section in any Router for this network in this region.
-          "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
+          "tcpTimeWaitTimeoutSec": 42, # Timeout (in seconds) for TCP connections that are in TIME_WAIT state. Defaults to 120s if not set.
+          "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
+              # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
+              # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
           "logConfig": { # Configuration of logging on a NAT. # Configure logging on this NAT.
-            "filter": "A String", # Specifies the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT.
+            "filter": "A String", # Specify the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT. This option can take one of the following values:
+                # - ERRORS_ONLY: Export logs only for connection failures.
+                # - TRANSLATIONS_ONLY: Export logs only for successful connections.
+                # - ALL: Export logs for all connections, successful and unsuccessful.
             "enable": True or False, # Indicates whether or not to export logs. This is false by default.
           },
           "minPortsPerVm": 42, # Minimum number of ports allocated to a VM from this NAT config. If not set, a default number of ports is allocated to a VM. This is rounded up to the nearest power of 2. For example, if the value of this field is 50, at least 64 ports are allocated to a VM.
@@ -434,10 +495,10 @@
       ],
       "interfaces": [ # Router interfaces. Each interface requires either one linked resource, (for example, linkedVpnTunnel), or IP address and IP address range (for example, ipRange), or both.
         {
-          "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be either be a VPN tunnel or an Interconnect attachment.
-          "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be either a VPN tunnel or an Interconnect attachment.
+          "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
+          "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
           "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP address space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
-          "name": "A String", # Name of this interface entry. The name must be 1-63 characters long and comply with RFC1035.
+          "name": "A String", # Name of this interface entry. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
           "managementType": "A String", # [Output Only] The resource that configures and manages this interface.
               # - MANAGED_BY_USER is the default value and can be managed directly by users.
               # - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
@@ -452,7 +513,7 @@
             "description": "A String", # User-specified description for the IP range.
           },
         ],
-        "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer?s hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
+        "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer's hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
         "advertisedGroups": [ # User-specified list of prefix groups to advertise in custom mode. This field can only be populated if advertise_mode is CUSTOM and is advertised to all peers of the router. These groups will be advertised in addition to any specified prefixes. Leave this field blank to advertise no custom groups.
           "A String",
         ],
@@ -464,13 +525,13 @@
           "enable": "A String", # The status of the BGP peer connection. If set to FALSE, any active session with the peer is terminated and all associated routing information is removed. If set to TRUE, the peer connection can be established with routing information. The default is TRUE.
           "peerAsn": 42, # Peer BGP Autonomous System Number (ASN). Each BGP interface may use a different value.
           "interfaceName": "A String", # Name of the interface the BGP peer is associated with.
-          "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long and comply with RFC1035.
+          "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
           "bfd": { # BFD configuration for the BGP peering.
             "sessionInitializationMode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-            "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by this router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+            "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
             "packetMode": "A String", # The BFD packet mode for this BGP peer. If set to CONTROL_AND_ECHO, BFD echo mode is enabled for this BGP peer. In this mode, if the peer router also has BFD echo mode enabled, BFD echo packets will be sent to the other router. If the peer router does not have BFD echo mode enabled, only control packets will be sent. If set to CONTROL_ONLY, BFD echo mode is disabled for this BGP peer. If this router and the peer router have a multihop connection, this should be set to CONTROL_ONLY as BFD echo mode is only supported on singlehop connections. The default is CONTROL_AND_ECHO.
             "mode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-            "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by the peer router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+            "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD control packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
             "multiplier": 42, # The number of consecutive BFD packets that must be missed before BFD declares that a peer is unavailable. If set, the value must be a value between 2 and 16. The default is 3.
             "slowTimerInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to and received from the peer router when BFD echo mode is enabled on both routers. The actual transmit and receive intervals are negotiated between the two routers and are equal to the greater of this value and the corresponding interval on the other router. If set, this value must be between 1000 and 30000. The default is 5000.
           },
@@ -504,7 +565,7 @@
 </div>
 
 <div class="method">
-    <code class="details" id="getNatMappingInfo">getNatMappingInfo(project, region, router, orderBy=None, maxResults=None, pageToken=None, natName=None, filter=None)</code>
+    <code class="details" id="getNatMappingInfo">getNatMappingInfo(project, region, router, orderBy=None, maxResults=None, pageToken=None, returnPartialSuccess=None, natName=None, filter=None)</code>
   <pre>Retrieves runtime Nat mapping information of VM endpoints.
 
 Args:
@@ -513,19 +574,20 @@
   router: string, Name of the Router resource to query for Nat Mapping information of VM endpoints. (required)
   orderBy: string, Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name.
 
-You can also sort results in descending order based on the creation timestamp using orderBy="creationTimestamp desc". This sorts results based on the creationTimestamp field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first.
+You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first.
 
-Currently, only sorting by name or creationTimestamp desc is supported.
-  maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than maxResults, Compute Engine returns a nextPageToken that can be used to get the next page of results in subsequent list requests. Acceptable values are 0 to 500, inclusive. (Default: 500)
-  pageToken: string, Specifies a page token to use. Set pageToken to the nextPageToken returned by a previous list request to get the next page of results.
+Currently, only sorting by `name` or `creationTimestamp desc` is supported.
+  maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than `maxResults`, Compute Engine returns a `nextPageToken` that can be used to get the next page of results in subsequent list requests. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
+  pageToken: string, Specifies a page token to use. Set `pageToken` to the `nextPageToken` returned by a previous list request to get the next page of results.
+  returnPartialSuccess: boolean, Opt-in for partial success behavior which provides partial results in case of failure. The default value is false and the logic is the same as today.
   natName: string, Name of the nat service to filter the Nat Mapping information. If it is omitted, all nats for this router will be returned. Name should conform to RFC1035.
-  filter: string, A filter expression that filters resources listed in the response. The expression must specify the field name, a comparison operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The comparison operator must be either =, !=, >, or <.
+  filter: string, A filter expression that filters resources listed in the response. The expression must specify the field name, a comparison operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The comparison operator must be either `=`, `!=`, `&gt;`, or `&lt;`.
 
-For example, if you are filtering Compute Engine instances, you can exclude instances named example-instance by specifying name != example-instance.
+For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`.
 
-You can also filter nested fields. For example, you could specify scheduling.automaticRestart = false to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels.
+You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels.
 
-To filter on multiple expressions, provide each separate expression within parentheses. For example, (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake"). By default, each expression is an AND expression. However, you can include AND and OR expressions explicitly. For example, (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true).
+To filter on multiple expressions, provide each separate expression within parentheses. For example: ``` (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake") ``` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: ``` (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true) ```
 
 Returns:
   An object of the form:
@@ -605,7 +667,7 @@
           "uptimeSeconds": "A String", # Time this session has been up, in seconds. Format: 145
           "linkedVpnTunnel": "A String", # URL of the VPN tunnel that this BGP peer controls.
           "bfdStatus": { # Next free: 15
-            "negotiatedLocalControlTxIntervalMs": 42, # Negotiated transmit interval for control packets. When echo mode is enabled this will reflect the negotiated slow timer interval.
+            "negotiatedLocalControlTxIntervalMs": 42, # Negotiated transmit interval for control packets.
             "controlPacketCounts": { # Control packet counts for the current BFD session.
               "numTx": 42, # Number of packets transmitted since the beginning of the current BFD session.
               "numRx": 42, # Number of packets received since the beginning of the current BFD session.
@@ -686,7 +748,7 @@
           "advertisedRoutes": [ # Routes that were advertised to the remote BGP peer
             { # Represents a Route resource.
                 #
-                # A route defines a path from VM instances in the VPC network to a specific destination. This destination can be inside or outside the VPC network. For more information, read the Routes overview. (== resource_for beta.routes ==) (== resource_for v1.routes ==)
+                # A route defines a path from VM instances in the VPC network to a specific destination. This destination can be inside or outside the VPC network. For more information, read the Routes overview. (== resource_for {$api_version}.routes ==)
               "nextHopGateway": "A String", # The URL to a gateway that should handle matching packets. You can only specify the internet gateway using a full or partial valid URL:  projects/project/global/gateways/default-internet-gateway
               "nextHopVpnTunnel": "A String", # The URL to a VpnTunnel that should handle matching packets.
               "kind": "compute#route", # [Output Only] Type of this resource. Always compute#routes for Route resources.
@@ -696,7 +758,7 @@
               ],
               "nextHopIlb": "A String", # The URL to a forwarding rule of type loadBalancingScheme=INTERNAL that should handle matching packets. You can only specify the forwarding rule as a partial or full URL. For example, the following are all valid URLs:
                   # - https://www.googleapis.com/compute/v1/projects/project/regions/region/forwardingRules/forwardingRule
-                  # - regions/region/forwardingRules/forwardingRule  Note that this can only be used when the destination_range is a public (non-RFC 1918) IP CIDR range.
+                  # - regions/region/forwardingRules/forwardingRule
               "nextHopInstance": "A String", # The URL to an instance that should handle matching packets. You can specify this as a full or partial URL. For example:
                   # https://www.googleapis.com/compute/v1/projects/project/zones/zone/instances/
               "priority": 42, # The priority of this route. Priority is used to break ties in cases where there is more than one matching route of equal prefix length. In cases where multiple routes have equal prefix length, the one with the lowest-numbered priority value wins. The default value is `1000`. The priority value must be from `0` to `65535`, inclusive.
@@ -734,7 +796,7 @@
       "bestRoutesForRouter": [ # Best routes learned by this router.
         { # Represents a Route resource.
             #
-            # A route defines a path from VM instances in the VPC network to a specific destination. This destination can be inside or outside the VPC network. For more information, read the Routes overview. (== resource_for beta.routes ==) (== resource_for v1.routes ==)
+            # A route defines a path from VM instances in the VPC network to a specific destination. This destination can be inside or outside the VPC network. For more information, read the Routes overview. (== resource_for {$api_version}.routes ==)
           "nextHopGateway": "A String", # The URL to a gateway that should handle matching packets. You can only specify the internet gateway using a full or partial valid URL:  projects/project/global/gateways/default-internet-gateway
           "nextHopVpnTunnel": "A String", # The URL to a VpnTunnel that should handle matching packets.
           "kind": "compute#route", # [Output Only] Type of this resource. Always compute#routes for Route resources.
@@ -744,7 +806,7 @@
           ],
           "nextHopIlb": "A String", # The URL to a forwarding rule of type loadBalancingScheme=INTERNAL that should handle matching packets. You can only specify the forwarding rule as a partial or full URL. For example, the following are all valid URLs:
               # - https://www.googleapis.com/compute/v1/projects/project/regions/region/forwardingRules/forwardingRule
-              # - regions/region/forwardingRules/forwardingRule  Note that this can only be used when the destination_range is a public (non-RFC 1918) IP CIDR range.
+              # - regions/region/forwardingRules/forwardingRule
           "nextHopInstance": "A String", # The URL to an instance that should handle matching packets. You can specify this as a full or partial URL. For example:
               # https://www.googleapis.com/compute/v1/projects/project/zones/zone/instances/
           "priority": 42, # The priority of this route. Priority is used to break ties in cases where there is more than one matching route of equal prefix length. In cases where multiple routes have equal prefix length, the one with the lowest-numbered priority value wins. The default value is `1000`. The priority value must be from `0` to `65535`, inclusive.
@@ -779,7 +841,7 @@
           "userAllocatedNatIps": [ # A list of IPs user-allocated for NAT. They will be raw IP strings like "179.12.26.133".
             "A String",
           ],
-          "drainUserAllocatedNatIps": [ # A list of IPs user-allocated for NAT that are in drain mode. Example: ["1.1.1.1", ?179.12.26.133?].
+          "drainUserAllocatedNatIps": [ # A list of IPs user-allocated for NAT that are in drain mode. Example: ["1.1.1.1", "179.12.26.133"].
             "A String",
           ],
           "name": "A String", # Unique name of this NAT.
@@ -790,7 +852,7 @@
           "userAllocatedNatIpResources": [ # A list of fully qualified URLs of reserved IP address resources.
             "A String",
           ],
-          "drainAutoAllocatedNatIps": [ # A list of IPs auto-allocated for NAT that are in drain mode. Example: ["1.1.1.1", ?179.12.26.133?].
+          "drainAutoAllocatedNatIps": [ # A list of IPs auto-allocated for NAT that are in drain mode. Example: ["1.1.1.1", "179.12.26.133"].
             "A String",
           ],
           "minExtraNatIpsNeeded": 42, # The number of extra IPs to allocate. This will be greater than 0 only if user-specified IPs are NOT enough to allow all configured VMs to use NAT. This value is meaningful only when auto-allocation of NAT IPs is *not* used.
@@ -800,7 +862,7 @@
       "bestRoutes": [ # Best routes for this router's network.
         { # Represents a Route resource.
             #
-            # A route defines a path from VM instances in the VPC network to a specific destination. This destination can be inside or outside the VPC network. For more information, read the Routes overview. (== resource_for beta.routes ==) (== resource_for v1.routes ==)
+            # A route defines a path from VM instances in the VPC network to a specific destination. This destination can be inside or outside the VPC network. For more information, read the Routes overview. (== resource_for {$api_version}.routes ==)
           "nextHopGateway": "A String", # The URL to a gateway that should handle matching packets. You can only specify the internet gateway using a full or partial valid URL:  projects/project/global/gateways/default-internet-gateway
           "nextHopVpnTunnel": "A String", # The URL to a VpnTunnel that should handle matching packets.
           "kind": "compute#route", # [Output Only] Type of this resource. Always compute#routes for Route resources.
@@ -810,7 +872,7 @@
           ],
           "nextHopIlb": "A String", # The URL to a forwarding rule of type loadBalancingScheme=INTERNAL that should handle matching packets. You can only specify the forwarding rule as a partial or full URL. For example, the following are all valid URLs:
               # - https://www.googleapis.com/compute/v1/projects/project/regions/region/forwardingRules/forwardingRule
-              # - regions/region/forwardingRules/forwardingRule  Note that this can only be used when the destination_range is a public (non-RFC 1918) IP CIDR range.
+              # - regions/region/forwardingRules/forwardingRule
           "nextHopInstance": "A String", # The URL to an instance that should handle matching packets. You can specify this as a full or partial URL. For example:
               # https://www.googleapis.com/compute/v1/projects/project/zones/zone/instances/
           "priority": 42, # The priority of this route. Priority is used to break ties in cases where there is more than one matching route of equal prefix length. In cases where multiple routes have equal prefix length, the one with the lowest-numbered priority value wins. The default value is `1000`. The priority value must be from `0` to `65535`, inclusive.
@@ -845,13 +907,13 @@
 </div>
 
 <div class="method">
-    <code class="details" id="insert">insert(project, region, body, requestId=None)</code>
+    <code class="details" id="insert">insert(project, region, body=None, requestId=None)</code>
   <pre>Creates a Router resource in the specified project and region using the data included in the request.
 
 Args:
   project: string, Project ID for this request. (required)
   region: string, Name of the region for this request. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # Represents a Cloud Router resource.
@@ -864,12 +926,36 @@
         "drainNatIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT only.
           "A String",
         ],
-        "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+        "enableEndpointIndependentMapping": True or False,
         "natIps": [ # A list of URLs of the IP resources used for this Nat service. These IP addresses must be valid static external IP addresses assigned to the project.
           "A String",
         ],
         "name": "A String", # Unique name of this Nat service. The name must be 1-63 characters long and comply with RFC1035.
         "tcpTransitoryIdleTimeoutSec": 42, # Timeout (in seconds) for TCP transitory connections. Defaults to 30s if not set.
+        "rules": [ # A list of rules associated with this NAT.
+          {
+            "action": { # The action to be enforced for traffic that matches this rule.
+              "sourceNatDrainIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT rule only.
+                "A String",
+              ],
+              "sourceNatActiveIps": [ # A list of URLs of the IP resources used for this NAT rule. These IP addresses must be valid static external IP addresses assigned to the project.
+                "A String",
+              ],
+            },
+            "priority": 42, # An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 65000. The priority must be unique among rules within a NAT.
+            "description": "A String", # An optional description of this rule.
+            "match": "A String", # CEL expression that specifies the match condition that egress traffic from a VM is evaluated against. If it evaluates to true, the corresponding ?action? is enforced.
+                #
+                # The following examples are valid match expressions:
+                #
+                # "inIpRange(destination.ip, '1.1.0.0/16') || inIpRange(destination.ip, '2.2.0.0/16')"
+                #
+                # "destination.ip == '1.1.0.1' || destination.ip == '8.8.8.8'"
+          },
+        ],
+        "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
+        "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+        "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
         "subnetworks": [ # A list of Subnetwork resources whose traffic should be translated by NAT Gateway. It is used only when LIST_OF_SUBNETWORKS is selected for the SubnetworkIpRangeToNatOption above.
           { # Defines the IP ranges that want to use NAT for a subnetwork.
             "sourceIpRangesToNat": [ # Specify the options for NAT ranges in the Subnetwork. All options of a single value are valid except NAT_IP_RANGE_OPTION_UNSPECIFIED. The only valid option with multiple values is: ["PRIMARY_IP_RANGE", "LIST_OF_SECONDARY_IP_RANGES"] Default: [ALL_IP_RANGES]
@@ -881,17 +967,19 @@
             ],
           },
         ],
-        "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
-        "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
-            # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
-            # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
         "sourceSubnetworkIpRangesToNat": "A String", # Specify the Nat option, which can take one of the following values:
             # - ALL_SUBNETWORKS_ALL_IP_RANGES: All of the IP ranges in every Subnetwork are allowed to Nat.
             # - ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES: All of the primary IP ranges in every Subnetwork are allowed to Nat.
             # - LIST_OF_SUBNETWORKS: A list of Subnetworks are allowed to Nat (specified in the field subnetwork below) The default is SUBNETWORK_IP_RANGE_TO_NAT_OPTION_UNSPECIFIED. Note that if this field contains ALL_SUBNETWORKS_ALL_IP_RANGES or ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES, then there should not be any other Router.Nat section in any Router for this network in this region.
-        "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
+        "tcpTimeWaitTimeoutSec": 42, # Timeout (in seconds) for TCP connections that are in TIME_WAIT state. Defaults to 120s if not set.
+        "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
+            # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
+            # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
         "logConfig": { # Configuration of logging on a NAT. # Configure logging on this NAT.
-          "filter": "A String", # Specifies the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT.
+          "filter": "A String", # Specify the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT. This option can take one of the following values:
+              # - ERRORS_ONLY: Export logs only for connection failures.
+              # - TRANSLATIONS_ONLY: Export logs only for successful connections.
+              # - ALL: Export logs for all connections, successful and unsuccessful.
           "enable": True or False, # Indicates whether or not to export logs. This is false by default.
         },
         "minPortsPerVm": 42, # Minimum number of ports allocated to a VM from this NAT config. If not set, a default number of ports is allocated to a VM. This is rounded up to the nearest power of 2. For example, if the value of this field is 50, at least 64 ports are allocated to a VM.
@@ -899,10 +987,10 @@
     ],
     "interfaces": [ # Router interfaces. Each interface requires either one linked resource, (for example, linkedVpnTunnel), or IP address and IP address range (for example, ipRange), or both.
       {
-        "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be either be a VPN tunnel or an Interconnect attachment.
-        "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be either a VPN tunnel or an Interconnect attachment.
+        "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
+        "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
         "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP address space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
-        "name": "A String", # Name of this interface entry. The name must be 1-63 characters long and comply with RFC1035.
+        "name": "A String", # Name of this interface entry. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
         "managementType": "A String", # [Output Only] The resource that configures and manages this interface.
             # - MANAGED_BY_USER is the default value and can be managed directly by users.
             # - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
@@ -917,7 +1005,7 @@
           "description": "A String", # User-specified description for the IP range.
         },
       ],
-      "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer?s hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
+      "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer's hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
       "advertisedGroups": [ # User-specified list of prefix groups to advertise in custom mode. This field can only be populated if advertise_mode is CUSTOM and is advertised to all peers of the router. These groups will be advertised in addition to any specified prefixes. Leave this field blank to advertise no custom groups.
         "A String",
       ],
@@ -929,13 +1017,13 @@
         "enable": "A String", # The status of the BGP peer connection. If set to FALSE, any active session with the peer is terminated and all associated routing information is removed. If set to TRUE, the peer connection can be established with routing information. The default is TRUE.
         "peerAsn": 42, # Peer BGP Autonomous System Number (ASN). Each BGP interface may use a different value.
         "interfaceName": "A String", # Name of the interface the BGP peer is associated with.
-        "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long and comply with RFC1035.
+        "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
         "bfd": { # BFD configuration for the BGP peering.
           "sessionInitializationMode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-          "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by this router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+          "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
           "packetMode": "A String", # The BFD packet mode for this BGP peer. If set to CONTROL_AND_ECHO, BFD echo mode is enabled for this BGP peer. In this mode, if the peer router also has BFD echo mode enabled, BFD echo packets will be sent to the other router. If the peer router does not have BFD echo mode enabled, only control packets will be sent. If set to CONTROL_ONLY, BFD echo mode is disabled for this BGP peer. If this router and the peer router have a multihop connection, this should be set to CONTROL_ONLY as BFD echo mode is only supported on singlehop connections. The default is CONTROL_AND_ECHO.
           "mode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-          "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by the peer router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+          "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD control packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
           "multiplier": 42, # The number of consecutive BFD packets that must be missed before BFD declares that a peer is unavailable. If set, the value must be a value between 2 and 16. The default is 3.
           "slowTimerInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to and received from the peer router when BFD echo mode is enabled on both routers. The actual transmit and receive intervals are negotiated between the two routers and are equal to the greater of this value and the corresponding interval on the other router. If set, this value must be between 1000 and 30000. The default is 5000.
         },
@@ -978,26 +1066,30 @@
 
     { # Represents an Operation resource.
       #
+      # Google Compute Engine has three Operation resources:
+      #
+      # * [Global](/compute/docs/reference/rest/{$api_version}/globalOperations) * [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations) * [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)
+      #
       # You can use an operation resource to manage asynchronous API requests. For more information, read Handling API responses.
       #
       # Operations can be global, regional or zonal.
-      # - For global operations, use the globalOperations resource.
-      # - For regional operations, use the regionOperations resource.
-      # - For zonal operations, use the zonalOperations resource.
+      # - For global operations, use the `globalOperations` resource.
+      # - For regional operations, use the `regionOperations` resource.
+      # - For zonal operations, use the `zonalOperations` resource.
       #
-      # For more information, read  Global, Regional, and Zonal Resources. (== resource_for v1.globalOperations ==) (== resource_for beta.globalOperations ==) (== resource_for v1.regionOperations ==) (== resource_for beta.regionOperations ==) (== resource_for v1.zoneOperations ==) (== resource_for beta.zoneOperations ==)
+      # For more information, read  Global, Regional, and Zonal Resources. (== resource_for {$api_version}.globalOperations ==) (== resource_for {$api_version}.regionOperations ==) (== resource_for {$api_version}.zoneOperations ==)
     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
     "clientOperationId": "A String", # [Output Only] The value of `requestId` if you provided it in the request. Not present otherwise.
     "creationTimestamp": "A String", # [Deprecated] This field is deprecated.
-    "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
+    "id": "A String", # [Output Only] The unique identifier for the operation. This identifier is defined by the server.
     "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only applicable when performing per-zone operations.
     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
-    "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
-    "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
+    "operationType": "A String", # [Output Only] The type of operation, such as `insert`, `update`, or `delete`, and so on.
+    "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as `NOT FOUND`.
     "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
-    "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
+    "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a `404` means the resource was not found.
     "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
-    "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
+    "status": "A String", # [Output Only] The status of the operation, which can be one of the following: `PENDING`, `RUNNING`, or `DONE`.
     "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
     "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
       {
@@ -1013,10 +1105,10 @@
       },
     ],
     "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
-    "user": "A String", # [Output Only] User who requested the operation, for example: user@example.com.
+    "user": "A String", # [Output Only] User who requested the operation, for example: `user@example.com`.
     "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
-    "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
-    "name": "A String", # [Output Only] Name of the resource.
+    "kind": "compute#operation", # [Output Only] Type of the resource. Always `compute#operation` for Operation resources.
+    "name": "A String", # [Output Only] Name of the operation.
     "region": "A String", # [Output Only] The URL of the region where the operation resides. Only applicable when performing regional operations.
     "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
       "errors": [ # [Output Only] The array of errors encountered while processing this operation.
@@ -1034,7 +1126,7 @@
 </div>
 
 <div class="method">
-    <code class="details" id="list">list(project, region, orderBy=None, maxResults=None, pageToken=None, filter=None)</code>
+    <code class="details" id="list">list(project, region, orderBy=None, maxResults=None, pageToken=None, returnPartialSuccess=None, filter=None)</code>
   <pre>Retrieves a list of Router resources available to the specified project.
 
 Args:
@@ -1042,18 +1134,19 @@
   region: string, Name of the region for this request. (required)
   orderBy: string, Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name.
 
-You can also sort results in descending order based on the creation timestamp using orderBy="creationTimestamp desc". This sorts results based on the creationTimestamp field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first.
+You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first.
 
-Currently, only sorting by name or creationTimestamp desc is supported.
-  maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than maxResults, Compute Engine returns a nextPageToken that can be used to get the next page of results in subsequent list requests. Acceptable values are 0 to 500, inclusive. (Default: 500)
-  pageToken: string, Specifies a page token to use. Set pageToken to the nextPageToken returned by a previous list request to get the next page of results.
-  filter: string, A filter expression that filters resources listed in the response. The expression must specify the field name, a comparison operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The comparison operator must be either =, !=, >, or <.
+Currently, only sorting by `name` or `creationTimestamp desc` is supported.
+  maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than `maxResults`, Compute Engine returns a `nextPageToken` that can be used to get the next page of results in subsequent list requests. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
+  pageToken: string, Specifies a page token to use. Set `pageToken` to the `nextPageToken` returned by a previous list request to get the next page of results.
+  returnPartialSuccess: boolean, Opt-in for partial success behavior which provides partial results in case of failure. The default value is false and the logic is the same as today.
+  filter: string, A filter expression that filters resources listed in the response. The expression must specify the field name, a comparison operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The comparison operator must be either `=`, `!=`, `&gt;`, or `&lt;`.
 
-For example, if you are filtering Compute Engine instances, you can exclude instances named example-instance by specifying name != example-instance.
+For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`.
 
-You can also filter nested fields. For example, you could specify scheduling.automaticRestart = false to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels.
+You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels.
 
-To filter on multiple expressions, provide each separate expression within parentheses. For example, (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake"). By default, each expression is an AND expression. However, you can include AND and OR expressions explicitly. For example, (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true).
+To filter on multiple expressions, provide each separate expression within parentheses. For example: ``` (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake") ``` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: ``` (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true) ```
 
 Returns:
   An object of the form:
@@ -1072,12 +1165,36 @@
               "drainNatIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT only.
                 "A String",
               ],
-              "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+              "enableEndpointIndependentMapping": True or False,
               "natIps": [ # A list of URLs of the IP resources used for this Nat service. These IP addresses must be valid static external IP addresses assigned to the project.
                 "A String",
               ],
               "name": "A String", # Unique name of this Nat service. The name must be 1-63 characters long and comply with RFC1035.
               "tcpTransitoryIdleTimeoutSec": 42, # Timeout (in seconds) for TCP transitory connections. Defaults to 30s if not set.
+              "rules": [ # A list of rules associated with this NAT.
+                {
+                  "action": { # The action to be enforced for traffic that matches this rule.
+                    "sourceNatDrainIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT rule only.
+                      "A String",
+                    ],
+                    "sourceNatActiveIps": [ # A list of URLs of the IP resources used for this NAT rule. These IP addresses must be valid static external IP addresses assigned to the project.
+                      "A String",
+                    ],
+                  },
+                  "priority": 42, # An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 65000. The priority must be unique among rules within a NAT.
+                  "description": "A String", # An optional description of this rule.
+                  "match": "A String", # CEL expression that specifies the match condition that egress traffic from a VM is evaluated against. If it evaluates to true, the corresponding ?action? is enforced.
+                      #
+                      # The following examples are valid match expressions:
+                      #
+                      # "inIpRange(destination.ip, '1.1.0.0/16') || inIpRange(destination.ip, '2.2.0.0/16')"
+                      #
+                      # "destination.ip == '1.1.0.1' || destination.ip == '8.8.8.8'"
+                },
+              ],
+              "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
+              "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+              "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
               "subnetworks": [ # A list of Subnetwork resources whose traffic should be translated by NAT Gateway. It is used only when LIST_OF_SUBNETWORKS is selected for the SubnetworkIpRangeToNatOption above.
                 { # Defines the IP ranges that want to use NAT for a subnetwork.
                   "sourceIpRangesToNat": [ # Specify the options for NAT ranges in the Subnetwork. All options of a single value are valid except NAT_IP_RANGE_OPTION_UNSPECIFIED. The only valid option with multiple values is: ["PRIMARY_IP_RANGE", "LIST_OF_SECONDARY_IP_RANGES"] Default: [ALL_IP_RANGES]
@@ -1089,17 +1206,19 @@
                   ],
                 },
               ],
-              "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
-              "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
-                  # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
-                  # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
               "sourceSubnetworkIpRangesToNat": "A String", # Specify the Nat option, which can take one of the following values:
                   # - ALL_SUBNETWORKS_ALL_IP_RANGES: All of the IP ranges in every Subnetwork are allowed to Nat.
                   # - ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES: All of the primary IP ranges in every Subnetwork are allowed to Nat.
                   # - LIST_OF_SUBNETWORKS: A list of Subnetworks are allowed to Nat (specified in the field subnetwork below) The default is SUBNETWORK_IP_RANGE_TO_NAT_OPTION_UNSPECIFIED. Note that if this field contains ALL_SUBNETWORKS_ALL_IP_RANGES or ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES, then there should not be any other Router.Nat section in any Router for this network in this region.
-              "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
+              "tcpTimeWaitTimeoutSec": 42, # Timeout (in seconds) for TCP connections that are in TIME_WAIT state. Defaults to 120s if not set.
+              "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
+                  # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
+                  # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
               "logConfig": { # Configuration of logging on a NAT. # Configure logging on this NAT.
-                "filter": "A String", # Specifies the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT.
+                "filter": "A String", # Specify the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT. This option can take one of the following values:
+                    # - ERRORS_ONLY: Export logs only for connection failures.
+                    # - TRANSLATIONS_ONLY: Export logs only for successful connections.
+                    # - ALL: Export logs for all connections, successful and unsuccessful.
                 "enable": True or False, # Indicates whether or not to export logs. This is false by default.
               },
               "minPortsPerVm": 42, # Minimum number of ports allocated to a VM from this NAT config. If not set, a default number of ports is allocated to a VM. This is rounded up to the nearest power of 2. For example, if the value of this field is 50, at least 64 ports are allocated to a VM.
@@ -1107,10 +1226,10 @@
           ],
           "interfaces": [ # Router interfaces. Each interface requires either one linked resource, (for example, linkedVpnTunnel), or IP address and IP address range (for example, ipRange), or both.
             {
-              "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be either be a VPN tunnel or an Interconnect attachment.
-              "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be either a VPN tunnel or an Interconnect attachment.
+              "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
+              "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
               "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP address space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
-              "name": "A String", # Name of this interface entry. The name must be 1-63 characters long and comply with RFC1035.
+              "name": "A String", # Name of this interface entry. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
               "managementType": "A String", # [Output Only] The resource that configures and manages this interface.
                   # - MANAGED_BY_USER is the default value and can be managed directly by users.
                   # - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
@@ -1125,7 +1244,7 @@
                 "description": "A String", # User-specified description for the IP range.
               },
             ],
-            "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer?s hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
+            "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer's hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
             "advertisedGroups": [ # User-specified list of prefix groups to advertise in custom mode. This field can only be populated if advertise_mode is CUSTOM and is advertised to all peers of the router. These groups will be advertised in addition to any specified prefixes. Leave this field blank to advertise no custom groups.
               "A String",
             ],
@@ -1137,13 +1256,13 @@
               "enable": "A String", # The status of the BGP peer connection. If set to FALSE, any active session with the peer is terminated and all associated routing information is removed. If set to TRUE, the peer connection can be established with routing information. The default is TRUE.
               "peerAsn": 42, # Peer BGP Autonomous System Number (ASN). Each BGP interface may use a different value.
               "interfaceName": "A String", # Name of the interface the BGP peer is associated with.
-              "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long and comply with RFC1035.
+              "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
               "bfd": { # BFD configuration for the BGP peering.
                 "sessionInitializationMode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-                "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by this router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+                "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
                 "packetMode": "A String", # The BFD packet mode for this BGP peer. If set to CONTROL_AND_ECHO, BFD echo mode is enabled for this BGP peer. In this mode, if the peer router also has BFD echo mode enabled, BFD echo packets will be sent to the other router. If the peer router does not have BFD echo mode enabled, only control packets will be sent. If set to CONTROL_ONLY, BFD echo mode is disabled for this BGP peer. If this router and the peer router have a multihop connection, this should be set to CONTROL_ONLY as BFD echo mode is only supported on singlehop connections. The default is CONTROL_AND_ECHO.
                 "mode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-                "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by the peer router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+                "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD control packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
                 "multiplier": 42, # The number of consecutive BFD packets that must be missed before BFD declares that a peer is unavailable. If set, the value must be a value between 2 and 16. The default is 3.
                 "slowTimerInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to and received from the peer router when BFD echo mode is enabled on both routers. The actual transmit and receive intervals are negotiated between the two routers and are equal to the greater of this value and the corresponding interval on the other router. If set, this value must be between 1000 and 30000. The default is 5000.
               },
@@ -1206,14 +1325,14 @@
 </div>
 
 <div class="method">
-    <code class="details" id="patch">patch(project, region, router, body, requestId=None)</code>
+    <code class="details" id="patch">patch(project, region, router, body=None, requestId=None)</code>
   <pre>Patches the specified Router resource with the data included in the request. This method supports PATCH semantics and uses JSON merge patch format and processing rules.
 
 Args:
   project: string, Project ID for this request. (required)
   region: string, Name of the region for this request. (required)
   router: string, Name of the Router resource to patch. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # Represents a Cloud Router resource.
@@ -1226,12 +1345,36 @@
         "drainNatIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT only.
           "A String",
         ],
-        "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+        "enableEndpointIndependentMapping": True or False,
         "natIps": [ # A list of URLs of the IP resources used for this Nat service. These IP addresses must be valid static external IP addresses assigned to the project.
           "A String",
         ],
         "name": "A String", # Unique name of this Nat service. The name must be 1-63 characters long and comply with RFC1035.
         "tcpTransitoryIdleTimeoutSec": 42, # Timeout (in seconds) for TCP transitory connections. Defaults to 30s if not set.
+        "rules": [ # A list of rules associated with this NAT.
+          {
+            "action": { # The action to be enforced for traffic that matches this rule.
+              "sourceNatDrainIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT rule only.
+                "A String",
+              ],
+              "sourceNatActiveIps": [ # A list of URLs of the IP resources used for this NAT rule. These IP addresses must be valid static external IP addresses assigned to the project.
+                "A String",
+              ],
+            },
+            "priority": 42, # An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 65000. The priority must be unique among rules within a NAT.
+            "description": "A String", # An optional description of this rule.
+            "match": "A String", # CEL expression that specifies the match condition that egress traffic from a VM is evaluated against. If it evaluates to true, the corresponding ?action? is enforced.
+                #
+                # The following examples are valid match expressions:
+                #
+                # "inIpRange(destination.ip, '1.1.0.0/16') || inIpRange(destination.ip, '2.2.0.0/16')"
+                #
+                # "destination.ip == '1.1.0.1' || destination.ip == '8.8.8.8'"
+          },
+        ],
+        "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
+        "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+        "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
         "subnetworks": [ # A list of Subnetwork resources whose traffic should be translated by NAT Gateway. It is used only when LIST_OF_SUBNETWORKS is selected for the SubnetworkIpRangeToNatOption above.
           { # Defines the IP ranges that want to use NAT for a subnetwork.
             "sourceIpRangesToNat": [ # Specify the options for NAT ranges in the Subnetwork. All options of a single value are valid except NAT_IP_RANGE_OPTION_UNSPECIFIED. The only valid option with multiple values is: ["PRIMARY_IP_RANGE", "LIST_OF_SECONDARY_IP_RANGES"] Default: [ALL_IP_RANGES]
@@ -1243,17 +1386,19 @@
             ],
           },
         ],
-        "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
-        "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
-            # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
-            # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
         "sourceSubnetworkIpRangesToNat": "A String", # Specify the Nat option, which can take one of the following values:
             # - ALL_SUBNETWORKS_ALL_IP_RANGES: All of the IP ranges in every Subnetwork are allowed to Nat.
             # - ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES: All of the primary IP ranges in every Subnetwork are allowed to Nat.
             # - LIST_OF_SUBNETWORKS: A list of Subnetworks are allowed to Nat (specified in the field subnetwork below) The default is SUBNETWORK_IP_RANGE_TO_NAT_OPTION_UNSPECIFIED. Note that if this field contains ALL_SUBNETWORKS_ALL_IP_RANGES or ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES, then there should not be any other Router.Nat section in any Router for this network in this region.
-        "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
+        "tcpTimeWaitTimeoutSec": 42, # Timeout (in seconds) for TCP connections that are in TIME_WAIT state. Defaults to 120s if not set.
+        "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
+            # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
+            # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
         "logConfig": { # Configuration of logging on a NAT. # Configure logging on this NAT.
-          "filter": "A String", # Specifies the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT.
+          "filter": "A String", # Specify the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT. This option can take one of the following values:
+              # - ERRORS_ONLY: Export logs only for connection failures.
+              # - TRANSLATIONS_ONLY: Export logs only for successful connections.
+              # - ALL: Export logs for all connections, successful and unsuccessful.
           "enable": True or False, # Indicates whether or not to export logs. This is false by default.
         },
         "minPortsPerVm": 42, # Minimum number of ports allocated to a VM from this NAT config. If not set, a default number of ports is allocated to a VM. This is rounded up to the nearest power of 2. For example, if the value of this field is 50, at least 64 ports are allocated to a VM.
@@ -1261,10 +1406,10 @@
     ],
     "interfaces": [ # Router interfaces. Each interface requires either one linked resource, (for example, linkedVpnTunnel), or IP address and IP address range (for example, ipRange), or both.
       {
-        "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be either be a VPN tunnel or an Interconnect attachment.
-        "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be either a VPN tunnel or an Interconnect attachment.
+        "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
+        "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
         "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP address space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
-        "name": "A String", # Name of this interface entry. The name must be 1-63 characters long and comply with RFC1035.
+        "name": "A String", # Name of this interface entry. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
         "managementType": "A String", # [Output Only] The resource that configures and manages this interface.
             # - MANAGED_BY_USER is the default value and can be managed directly by users.
             # - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
@@ -1279,7 +1424,7 @@
           "description": "A String", # User-specified description for the IP range.
         },
       ],
-      "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer?s hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
+      "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer's hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
       "advertisedGroups": [ # User-specified list of prefix groups to advertise in custom mode. This field can only be populated if advertise_mode is CUSTOM and is advertised to all peers of the router. These groups will be advertised in addition to any specified prefixes. Leave this field blank to advertise no custom groups.
         "A String",
       ],
@@ -1291,13 +1436,13 @@
         "enable": "A String", # The status of the BGP peer connection. If set to FALSE, any active session with the peer is terminated and all associated routing information is removed. If set to TRUE, the peer connection can be established with routing information. The default is TRUE.
         "peerAsn": 42, # Peer BGP Autonomous System Number (ASN). Each BGP interface may use a different value.
         "interfaceName": "A String", # Name of the interface the BGP peer is associated with.
-        "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long and comply with RFC1035.
+        "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
         "bfd": { # BFD configuration for the BGP peering.
           "sessionInitializationMode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-          "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by this router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+          "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
           "packetMode": "A String", # The BFD packet mode for this BGP peer. If set to CONTROL_AND_ECHO, BFD echo mode is enabled for this BGP peer. In this mode, if the peer router also has BFD echo mode enabled, BFD echo packets will be sent to the other router. If the peer router does not have BFD echo mode enabled, only control packets will be sent. If set to CONTROL_ONLY, BFD echo mode is disabled for this BGP peer. If this router and the peer router have a multihop connection, this should be set to CONTROL_ONLY as BFD echo mode is only supported on singlehop connections. The default is CONTROL_AND_ECHO.
           "mode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-          "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by the peer router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+          "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD control packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
           "multiplier": 42, # The number of consecutive BFD packets that must be missed before BFD declares that a peer is unavailable. If set, the value must be a value between 2 and 16. The default is 3.
           "slowTimerInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to and received from the peer router when BFD echo mode is enabled on both routers. The actual transmit and receive intervals are negotiated between the two routers and are equal to the greater of this value and the corresponding interval on the other router. If set, this value must be between 1000 and 30000. The default is 5000.
         },
@@ -1340,26 +1485,30 @@
 
     { # Represents an Operation resource.
       #
+      # Google Compute Engine has three Operation resources:
+      #
+      # * [Global](/compute/docs/reference/rest/{$api_version}/globalOperations) * [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations) * [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)
+      #
       # You can use an operation resource to manage asynchronous API requests. For more information, read Handling API responses.
       #
       # Operations can be global, regional or zonal.
-      # - For global operations, use the globalOperations resource.
-      # - For regional operations, use the regionOperations resource.
-      # - For zonal operations, use the zonalOperations resource.
+      # - For global operations, use the `globalOperations` resource.
+      # - For regional operations, use the `regionOperations` resource.
+      # - For zonal operations, use the `zonalOperations` resource.
       #
-      # For more information, read  Global, Regional, and Zonal Resources. (== resource_for v1.globalOperations ==) (== resource_for beta.globalOperations ==) (== resource_for v1.regionOperations ==) (== resource_for beta.regionOperations ==) (== resource_for v1.zoneOperations ==) (== resource_for beta.zoneOperations ==)
+      # For more information, read  Global, Regional, and Zonal Resources. (== resource_for {$api_version}.globalOperations ==) (== resource_for {$api_version}.regionOperations ==) (== resource_for {$api_version}.zoneOperations ==)
     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
     "clientOperationId": "A String", # [Output Only] The value of `requestId` if you provided it in the request. Not present otherwise.
     "creationTimestamp": "A String", # [Deprecated] This field is deprecated.
-    "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
+    "id": "A String", # [Output Only] The unique identifier for the operation. This identifier is defined by the server.
     "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only applicable when performing per-zone operations.
     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
-    "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
-    "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
+    "operationType": "A String", # [Output Only] The type of operation, such as `insert`, `update`, or `delete`, and so on.
+    "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as `NOT FOUND`.
     "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
-    "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
+    "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a `404` means the resource was not found.
     "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
-    "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
+    "status": "A String", # [Output Only] The status of the operation, which can be one of the following: `PENDING`, `RUNNING`, or `DONE`.
     "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
     "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
       {
@@ -1375,10 +1524,10 @@
       },
     ],
     "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
-    "user": "A String", # [Output Only] User who requested the operation, for example: user@example.com.
+    "user": "A String", # [Output Only] User who requested the operation, for example: `user@example.com`.
     "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
-    "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
-    "name": "A String", # [Output Only] Name of the resource.
+    "kind": "compute#operation", # [Output Only] Type of the resource. Always `compute#operation` for Operation resources.
+    "name": "A String", # [Output Only] Name of the operation.
     "region": "A String", # [Output Only] The URL of the region where the operation resides. Only applicable when performing regional operations.
     "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
       "errors": [ # [Output Only] The array of errors encountered while processing this operation.
@@ -1396,14 +1545,14 @@
 </div>
 
 <div class="method">
-    <code class="details" id="preview">preview(project, region, router, body)</code>
+    <code class="details" id="preview">preview(project, region, router, body=None)</code>
   <pre>Preview fields auto-generated during router create and update operations. Calling this method does NOT create or update the router.
 
 Args:
   project: string, Project ID for this request. (required)
   region: string, Name of the region for this request. (required)
   router: string, Name of the Router resource to query. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # Represents a Cloud Router resource.
@@ -1416,12 +1565,36 @@
         "drainNatIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT only.
           "A String",
         ],
-        "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+        "enableEndpointIndependentMapping": True or False,
         "natIps": [ # A list of URLs of the IP resources used for this Nat service. These IP addresses must be valid static external IP addresses assigned to the project.
           "A String",
         ],
         "name": "A String", # Unique name of this Nat service. The name must be 1-63 characters long and comply with RFC1035.
         "tcpTransitoryIdleTimeoutSec": 42, # Timeout (in seconds) for TCP transitory connections. Defaults to 30s if not set.
+        "rules": [ # A list of rules associated with this NAT.
+          {
+            "action": { # The action to be enforced for traffic that matches this rule.
+              "sourceNatDrainIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT rule only.
+                "A String",
+              ],
+              "sourceNatActiveIps": [ # A list of URLs of the IP resources used for this NAT rule. These IP addresses must be valid static external IP addresses assigned to the project.
+                "A String",
+              ],
+            },
+            "priority": 42, # An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 65000. The priority must be unique among rules within a NAT.
+            "description": "A String", # An optional description of this rule.
+            "match": "A String", # CEL expression that specifies the match condition that egress traffic from a VM is evaluated against. If it evaluates to true, the corresponding ?action? is enforced.
+                #
+                # The following examples are valid match expressions:
+                #
+                # "inIpRange(destination.ip, '1.1.0.0/16') || inIpRange(destination.ip, '2.2.0.0/16')"
+                #
+                # "destination.ip == '1.1.0.1' || destination.ip == '8.8.8.8'"
+          },
+        ],
+        "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
+        "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+        "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
         "subnetworks": [ # A list of Subnetwork resources whose traffic should be translated by NAT Gateway. It is used only when LIST_OF_SUBNETWORKS is selected for the SubnetworkIpRangeToNatOption above.
           { # Defines the IP ranges that want to use NAT for a subnetwork.
             "sourceIpRangesToNat": [ # Specify the options for NAT ranges in the Subnetwork. All options of a single value are valid except NAT_IP_RANGE_OPTION_UNSPECIFIED. The only valid option with multiple values is: ["PRIMARY_IP_RANGE", "LIST_OF_SECONDARY_IP_RANGES"] Default: [ALL_IP_RANGES]
@@ -1433,17 +1606,19 @@
             ],
           },
         ],
-        "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
-        "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
-            # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
-            # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
         "sourceSubnetworkIpRangesToNat": "A String", # Specify the Nat option, which can take one of the following values:
             # - ALL_SUBNETWORKS_ALL_IP_RANGES: All of the IP ranges in every Subnetwork are allowed to Nat.
             # - ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES: All of the primary IP ranges in every Subnetwork are allowed to Nat.
             # - LIST_OF_SUBNETWORKS: A list of Subnetworks are allowed to Nat (specified in the field subnetwork below) The default is SUBNETWORK_IP_RANGE_TO_NAT_OPTION_UNSPECIFIED. Note that if this field contains ALL_SUBNETWORKS_ALL_IP_RANGES or ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES, then there should not be any other Router.Nat section in any Router for this network in this region.
-        "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
+        "tcpTimeWaitTimeoutSec": 42, # Timeout (in seconds) for TCP connections that are in TIME_WAIT state. Defaults to 120s if not set.
+        "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
+            # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
+            # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
         "logConfig": { # Configuration of logging on a NAT. # Configure logging on this NAT.
-          "filter": "A String", # Specifies the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT.
+          "filter": "A String", # Specify the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT. This option can take one of the following values:
+              # - ERRORS_ONLY: Export logs only for connection failures.
+              # - TRANSLATIONS_ONLY: Export logs only for successful connections.
+              # - ALL: Export logs for all connections, successful and unsuccessful.
           "enable": True or False, # Indicates whether or not to export logs. This is false by default.
         },
         "minPortsPerVm": 42, # Minimum number of ports allocated to a VM from this NAT config. If not set, a default number of ports is allocated to a VM. This is rounded up to the nearest power of 2. For example, if the value of this field is 50, at least 64 ports are allocated to a VM.
@@ -1451,10 +1626,10 @@
     ],
     "interfaces": [ # Router interfaces. Each interface requires either one linked resource, (for example, linkedVpnTunnel), or IP address and IP address range (for example, ipRange), or both.
       {
-        "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be either be a VPN tunnel or an Interconnect attachment.
-        "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be either a VPN tunnel or an Interconnect attachment.
+        "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
+        "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
         "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP address space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
-        "name": "A String", # Name of this interface entry. The name must be 1-63 characters long and comply with RFC1035.
+        "name": "A String", # Name of this interface entry. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
         "managementType": "A String", # [Output Only] The resource that configures and manages this interface.
             # - MANAGED_BY_USER is the default value and can be managed directly by users.
             # - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
@@ -1469,7 +1644,7 @@
           "description": "A String", # User-specified description for the IP range.
         },
       ],
-      "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer?s hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
+      "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer's hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
       "advertisedGroups": [ # User-specified list of prefix groups to advertise in custom mode. This field can only be populated if advertise_mode is CUSTOM and is advertised to all peers of the router. These groups will be advertised in addition to any specified prefixes. Leave this field blank to advertise no custom groups.
         "A String",
       ],
@@ -1481,13 +1656,13 @@
         "enable": "A String", # The status of the BGP peer connection. If set to FALSE, any active session with the peer is terminated and all associated routing information is removed. If set to TRUE, the peer connection can be established with routing information. The default is TRUE.
         "peerAsn": 42, # Peer BGP Autonomous System Number (ASN). Each BGP interface may use a different value.
         "interfaceName": "A String", # Name of the interface the BGP peer is associated with.
-        "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long and comply with RFC1035.
+        "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
         "bfd": { # BFD configuration for the BGP peering.
           "sessionInitializationMode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-          "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by this router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+          "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
           "packetMode": "A String", # The BFD packet mode for this BGP peer. If set to CONTROL_AND_ECHO, BFD echo mode is enabled for this BGP peer. In this mode, if the peer router also has BFD echo mode enabled, BFD echo packets will be sent to the other router. If the peer router does not have BFD echo mode enabled, only control packets will be sent. If set to CONTROL_ONLY, BFD echo mode is disabled for this BGP peer. If this router and the peer router have a multihop connection, this should be set to CONTROL_ONLY as BFD echo mode is only supported on singlehop connections. The default is CONTROL_AND_ECHO.
           "mode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-          "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by the peer router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+          "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD control packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
           "multiplier": 42, # The number of consecutive BFD packets that must be missed before BFD declares that a peer is unavailable. If set, the value must be a value between 2 and 16. The default is 3.
           "slowTimerInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to and received from the peer router when BFD echo mode is enabled on both routers. The actual transmit and receive intervals are negotiated between the two routers and are equal to the greater of this value and the corresponding interval on the other router. If set, this value must be between 1000 and 30000. The default is 5000.
         },
@@ -1534,12 +1709,36 @@
             "drainNatIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT only.
               "A String",
             ],
-            "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+            "enableEndpointIndependentMapping": True or False,
             "natIps": [ # A list of URLs of the IP resources used for this Nat service. These IP addresses must be valid static external IP addresses assigned to the project.
               "A String",
             ],
             "name": "A String", # Unique name of this Nat service. The name must be 1-63 characters long and comply with RFC1035.
             "tcpTransitoryIdleTimeoutSec": 42, # Timeout (in seconds) for TCP transitory connections. Defaults to 30s if not set.
+            "rules": [ # A list of rules associated with this NAT.
+              {
+                "action": { # The action to be enforced for traffic that matches this rule.
+                  "sourceNatDrainIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT rule only.
+                    "A String",
+                  ],
+                  "sourceNatActiveIps": [ # A list of URLs of the IP resources used for this NAT rule. These IP addresses must be valid static external IP addresses assigned to the project.
+                    "A String",
+                  ],
+                },
+                "priority": 42, # An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 65000. The priority must be unique among rules within a NAT.
+                "description": "A String", # An optional description of this rule.
+                "match": "A String", # CEL expression that specifies the match condition that egress traffic from a VM is evaluated against. If it evaluates to true, the corresponding ?action? is enforced.
+                    #
+                    # The following examples are valid match expressions:
+                    #
+                    # "inIpRange(destination.ip, '1.1.0.0/16') || inIpRange(destination.ip, '2.2.0.0/16')"
+                    #
+                    # "destination.ip == '1.1.0.1' || destination.ip == '8.8.8.8'"
+              },
+            ],
+            "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
+            "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+            "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
             "subnetworks": [ # A list of Subnetwork resources whose traffic should be translated by NAT Gateway. It is used only when LIST_OF_SUBNETWORKS is selected for the SubnetworkIpRangeToNatOption above.
               { # Defines the IP ranges that want to use NAT for a subnetwork.
                 "sourceIpRangesToNat": [ # Specify the options for NAT ranges in the Subnetwork. All options of a single value are valid except NAT_IP_RANGE_OPTION_UNSPECIFIED. The only valid option with multiple values is: ["PRIMARY_IP_RANGE", "LIST_OF_SECONDARY_IP_RANGES"] Default: [ALL_IP_RANGES]
@@ -1551,17 +1750,19 @@
                 ],
               },
             ],
-            "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
-            "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
-                # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
-                # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
             "sourceSubnetworkIpRangesToNat": "A String", # Specify the Nat option, which can take one of the following values:
                 # - ALL_SUBNETWORKS_ALL_IP_RANGES: All of the IP ranges in every Subnetwork are allowed to Nat.
                 # - ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES: All of the primary IP ranges in every Subnetwork are allowed to Nat.
                 # - LIST_OF_SUBNETWORKS: A list of Subnetworks are allowed to Nat (specified in the field subnetwork below) The default is SUBNETWORK_IP_RANGE_TO_NAT_OPTION_UNSPECIFIED. Note that if this field contains ALL_SUBNETWORKS_ALL_IP_RANGES or ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES, then there should not be any other Router.Nat section in any Router for this network in this region.
-            "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
+            "tcpTimeWaitTimeoutSec": 42, # Timeout (in seconds) for TCP connections that are in TIME_WAIT state. Defaults to 120s if not set.
+            "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
+                # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
+                # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
             "logConfig": { # Configuration of logging on a NAT. # Configure logging on this NAT.
-              "filter": "A String", # Specifies the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT.
+              "filter": "A String", # Specify the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT. This option can take one of the following values:
+                  # - ERRORS_ONLY: Export logs only for connection failures.
+                  # - TRANSLATIONS_ONLY: Export logs only for successful connections.
+                  # - ALL: Export logs for all connections, successful and unsuccessful.
               "enable": True or False, # Indicates whether or not to export logs. This is false by default.
             },
             "minPortsPerVm": 42, # Minimum number of ports allocated to a VM from this NAT config. If not set, a default number of ports is allocated to a VM. This is rounded up to the nearest power of 2. For example, if the value of this field is 50, at least 64 ports are allocated to a VM.
@@ -1569,10 +1770,10 @@
         ],
         "interfaces": [ # Router interfaces. Each interface requires either one linked resource, (for example, linkedVpnTunnel), or IP address and IP address range (for example, ipRange), or both.
           {
-            "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be either be a VPN tunnel or an Interconnect attachment.
-            "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be either a VPN tunnel or an Interconnect attachment.
+            "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
+            "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
             "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP address space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
-            "name": "A String", # Name of this interface entry. The name must be 1-63 characters long and comply with RFC1035.
+            "name": "A String", # Name of this interface entry. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
             "managementType": "A String", # [Output Only] The resource that configures and manages this interface.
                 # - MANAGED_BY_USER is the default value and can be managed directly by users.
                 # - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
@@ -1587,7 +1788,7 @@
               "description": "A String", # User-specified description for the IP range.
             },
           ],
-          "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer?s hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
+          "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer's hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
           "advertisedGroups": [ # User-specified list of prefix groups to advertise in custom mode. This field can only be populated if advertise_mode is CUSTOM and is advertised to all peers of the router. These groups will be advertised in addition to any specified prefixes. Leave this field blank to advertise no custom groups.
             "A String",
           ],
@@ -1599,13 +1800,13 @@
             "enable": "A String", # The status of the BGP peer connection. If set to FALSE, any active session with the peer is terminated and all associated routing information is removed. If set to TRUE, the peer connection can be established with routing information. The default is TRUE.
             "peerAsn": 42, # Peer BGP Autonomous System Number (ASN). Each BGP interface may use a different value.
             "interfaceName": "A String", # Name of the interface the BGP peer is associated with.
-            "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long and comply with RFC1035.
+            "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
             "bfd": { # BFD configuration for the BGP peering.
               "sessionInitializationMode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-              "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by this router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+              "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
               "packetMode": "A String", # The BFD packet mode for this BGP peer. If set to CONTROL_AND_ECHO, BFD echo mode is enabled for this BGP peer. In this mode, if the peer router also has BFD echo mode enabled, BFD echo packets will be sent to the other router. If the peer router does not have BFD echo mode enabled, only control packets will be sent. If set to CONTROL_ONLY, BFD echo mode is disabled for this BGP peer. If this router and the peer router have a multihop connection, this should be set to CONTROL_ONLY as BFD echo mode is only supported on singlehop connections. The default is CONTROL_AND_ECHO.
               "mode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-              "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by the peer router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+              "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD control packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
               "multiplier": 42, # The number of consecutive BFD packets that must be missed before BFD declares that a peer is unavailable. If set, the value must be a value between 2 and 16. The default is 3.
               "slowTimerInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to and received from the peer router when BFD echo mode is enabled on both routers. The actual transmit and receive intervals are negotiated between the two routers and are equal to the greater of this value and the corresponding interval on the other router. If set, this value must be between 1000 and 30000. The default is 5000.
             },
@@ -1640,14 +1841,14 @@
 </div>
 
 <div class="method">
-    <code class="details" id="testIamPermissions">testIamPermissions(project, region, resource, body)</code>
+    <code class="details" id="testIamPermissions">testIamPermissions(project, region, resource, body=None)</code>
   <pre>Returns permissions that a caller has on the specified resource.
 
 Args:
   project: string, Project ID for this request. (required)
   region: string, The name of the region for this request. (required)
   resource: string, Name or id of the resource for this request. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 {
@@ -1668,14 +1869,14 @@
 </div>
 
 <div class="method">
-    <code class="details" id="update">update(project, region, router, body, requestId=None)</code>
-  <pre>Updates the specified Router resource with the data included in the request.
+    <code class="details" id="update">update(project, region, router, body=None, requestId=None)</code>
+  <pre>Updates the specified Router resource with the data included in the request. This method conforms to PUT semantics, which requests that the state of the target resource be created or replaced with the state defined by the representation enclosed in the request message payload.
 
 Args:
   project: string, Project ID for this request. (required)
   region: string, Name of the region for this request. (required)
   router: string, Name of the Router resource to update. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # Represents a Cloud Router resource.
@@ -1688,12 +1889,36 @@
         "drainNatIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT only.
           "A String",
         ],
-        "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+        "enableEndpointIndependentMapping": True or False,
         "natIps": [ # A list of URLs of the IP resources used for this Nat service. These IP addresses must be valid static external IP addresses assigned to the project.
           "A String",
         ],
         "name": "A String", # Unique name of this Nat service. The name must be 1-63 characters long and comply with RFC1035.
         "tcpTransitoryIdleTimeoutSec": 42, # Timeout (in seconds) for TCP transitory connections. Defaults to 30s if not set.
+        "rules": [ # A list of rules associated with this NAT.
+          {
+            "action": { # The action to be enforced for traffic that matches this rule.
+              "sourceNatDrainIps": [ # A list of URLs of the IP resources to be drained. These IPs must be valid static external IPs that have been assigned to the NAT. These IPs should be used for updating/patching a NAT rule only.
+                "A String",
+              ],
+              "sourceNatActiveIps": [ # A list of URLs of the IP resources used for this NAT rule. These IP addresses must be valid static external IP addresses assigned to the project.
+                "A String",
+              ],
+            },
+            "priority": 42, # An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 65000. The priority must be unique among rules within a NAT.
+            "description": "A String", # An optional description of this rule.
+            "match": "A String", # CEL expression that specifies the match condition that egress traffic from a VM is evaluated against. If it evaluates to true, the corresponding ?action? is enforced.
+                #
+                # The following examples are valid match expressions:
+                #
+                # "inIpRange(destination.ip, '1.1.0.0/16') || inIpRange(destination.ip, '2.2.0.0/16')"
+                #
+                # "destination.ip == '1.1.0.1' || destination.ip == '8.8.8.8'"
+          },
+        ],
+        "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
+        "udpIdleTimeoutSec": 42, # Timeout (in seconds) for UDP connections. Defaults to 30s if not set.
+        "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
         "subnetworks": [ # A list of Subnetwork resources whose traffic should be translated by NAT Gateway. It is used only when LIST_OF_SUBNETWORKS is selected for the SubnetworkIpRangeToNatOption above.
           { # Defines the IP ranges that want to use NAT for a subnetwork.
             "sourceIpRangesToNat": [ # Specify the options for NAT ranges in the Subnetwork. All options of a single value are valid except NAT_IP_RANGE_OPTION_UNSPECIFIED. The only valid option with multiple values is: ["PRIMARY_IP_RANGE", "LIST_OF_SECONDARY_IP_RANGES"] Default: [ALL_IP_RANGES]
@@ -1705,17 +1930,19 @@
             ],
           },
         ],
-        "tcpEstablishedIdleTimeoutSec": 42, # Timeout (in seconds) for TCP established connections. Defaults to 1200s if not set.
-        "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
-            # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
-            # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
         "sourceSubnetworkIpRangesToNat": "A String", # Specify the Nat option, which can take one of the following values:
             # - ALL_SUBNETWORKS_ALL_IP_RANGES: All of the IP ranges in every Subnetwork are allowed to Nat.
             # - ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES: All of the primary IP ranges in every Subnetwork are allowed to Nat.
             # - LIST_OF_SUBNETWORKS: A list of Subnetworks are allowed to Nat (specified in the field subnetwork below) The default is SUBNETWORK_IP_RANGE_TO_NAT_OPTION_UNSPECIFIED. Note that if this field contains ALL_SUBNETWORKS_ALL_IP_RANGES or ALL_SUBNETWORKS_ALL_PRIMARY_IP_RANGES, then there should not be any other Router.Nat section in any Router for this network in this region.
-        "icmpIdleTimeoutSec": 42, # Timeout (in seconds) for ICMP connections. Defaults to 30s if not set.
+        "tcpTimeWaitTimeoutSec": 42, # Timeout (in seconds) for TCP connections that are in TIME_WAIT state. Defaults to 120s if not set.
+        "natIpAllocateOption": "A String", # Specify the NatIpAllocateOption, which can take one of the following values:
+            # - MANUAL_ONLY: Uses only Nat IP addresses provided by customers. When there are not enough specified Nat IPs, the Nat service fails for new VMs.
+            # - AUTO_ONLY: Nat IPs are allocated by Google Cloud Platform; customers can't specify any Nat IPs. When choosing AUTO_ONLY, then nat_ip should be empty.
         "logConfig": { # Configuration of logging on a NAT. # Configure logging on this NAT.
-          "filter": "A String", # Specifies the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT.
+          "filter": "A String", # Specify the desired filtering of logs on this NAT. If unspecified, logs are exported for all connections handled by this NAT. This option can take one of the following values:
+              # - ERRORS_ONLY: Export logs only for connection failures.
+              # - TRANSLATIONS_ONLY: Export logs only for successful connections.
+              # - ALL: Export logs for all connections, successful and unsuccessful.
           "enable": True or False, # Indicates whether or not to export logs. This is false by default.
         },
         "minPortsPerVm": 42, # Minimum number of ports allocated to a VM from this NAT config. If not set, a default number of ports is allocated to a VM. This is rounded up to the nearest power of 2. For example, if the value of this field is 50, at least 64 ports are allocated to a VM.
@@ -1723,10 +1950,10 @@
     ],
     "interfaces": [ # Router interfaces. Each interface requires either one linked resource, (for example, linkedVpnTunnel), or IP address and IP address range (for example, ipRange), or both.
       {
-        "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be either be a VPN tunnel or an Interconnect attachment.
-        "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be either a VPN tunnel or an Interconnect attachment.
+        "linkedInterconnectAttachment": "A String", # URI of the linked Interconnect attachment. It must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
+        "linkedVpnTunnel": "A String", # URI of the linked VPN tunnel, which must be in the same region as the router. Each interface can have one linked resource, which can be a VPN tunnel, an Interconnect attachment, or a virtual machine instance.
         "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP address space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
-        "name": "A String", # Name of this interface entry. The name must be 1-63 characters long and comply with RFC1035.
+        "name": "A String", # Name of this interface entry. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
         "managementType": "A String", # [Output Only] The resource that configures and manages this interface.
             # - MANAGED_BY_USER is the default value and can be managed directly by users.
             # - MANAGED_BY_ATTACHMENT is an interface that is configured and managed by Cloud Interconnect, specifically, by an InterconnectAttachment of type PARTNER. Google automatically creates, updates, and deletes this type of interface when the PARTNER InterconnectAttachment is created, updated, or deleted.
@@ -1741,7 +1968,7 @@
           "description": "A String", # User-specified description for the IP range.
         },
       ],
-      "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer?s hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
+      "keepaliveInterval": 42, # The interval in seconds between BGP keepalive messages that are sent to the peer. Hold time is three times the interval at which keepalive messages are sent, and the hold time is the maximum number of seconds allowed to elapse between successive keepalive messages that BGP receives from a peer. BGP will use the smaller of either the local hold time value or the peer's hold time value as the hold time for the BGP connection between the two peers. If set, this value must be between 1 and 120. The default is 20.
       "advertisedGroups": [ # User-specified list of prefix groups to advertise in custom mode. This field can only be populated if advertise_mode is CUSTOM and is advertised to all peers of the router. These groups will be advertised in addition to any specified prefixes. Leave this field blank to advertise no custom groups.
         "A String",
       ],
@@ -1753,13 +1980,13 @@
         "enable": "A String", # The status of the BGP peer connection. If set to FALSE, any active session with the peer is terminated and all associated routing information is removed. If set to TRUE, the peer connection can be established with routing information. The default is TRUE.
         "peerAsn": 42, # Peer BGP Autonomous System Number (ASN). Each BGP interface may use a different value.
         "interfaceName": "A String", # Name of the interface the BGP peer is associated with.
-        "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long and comply with RFC1035.
+        "name": "A String", # Name of this BGP peer. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
         "bfd": { # BFD configuration for the BGP peering.
           "sessionInitializationMode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-          "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by this router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+          "minTransmitInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the corresponding receive interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
           "packetMode": "A String", # The BFD packet mode for this BGP peer. If set to CONTROL_AND_ECHO, BFD echo mode is enabled for this BGP peer. In this mode, if the peer router also has BFD echo mode enabled, BFD echo packets will be sent to the other router. If the peer router does not have BFD echo mode enabled, only control packets will be sent. If set to CONTROL_ONLY, BFD echo mode is disabled for this BGP peer. If this router and the peer router have a multihop connection, this should be set to CONTROL_ONLY as BFD echo mode is only supported on singlehop connections. The default is CONTROL_AND_ECHO.
           "mode": "A String", # The BFD session initialization mode for this BGP peer. If set to ACTIVE, the Cloud Router will initiate the BFD session for this BGP peer. If set to PASSIVE, the Cloud Router will wait for the peer router to initiate the BFD session for this BGP peer. If set to DISABLED, BFD is disabled for this BGP peer. The default is PASSIVE.
-          "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If BFD echo mode is enabled on this router and the peer router, this value is used to negotiate the interval between BFD echo packets transmitted by the peer router. Otherwise, it will be used to determine the interval between BFD control packets. If set, this value must be between 100 and 30000. The default is 300.
+          "minReceiveInterval": 42, # The minimum interval, in milliseconds, between BFD control packets received from the peer router. The actual value is negotiated between the two routers and is equal to the greater of this value and the transmit interval of the other router. If set, this value must be between 100 and 30000. The default is 300.
           "multiplier": 42, # The number of consecutive BFD packets that must be missed before BFD declares that a peer is unavailable. If set, the value must be a value between 2 and 16. The default is 3.
           "slowTimerInterval": 42, # The minimum interval, in milliseconds, between BFD control packets transmitted to and received from the peer router when BFD echo mode is enabled on both routers. The actual transmit and receive intervals are negotiated between the two routers and are equal to the greater of this value and the corresponding interval on the other router. If set, this value must be between 1000 and 30000. The default is 5000.
         },
@@ -1802,26 +2029,30 @@
 
     { # Represents an Operation resource.
       #
+      # Google Compute Engine has three Operation resources:
+      #
+      # * [Global](/compute/docs/reference/rest/{$api_version}/globalOperations) * [Regional](/compute/docs/reference/rest/{$api_version}/regionOperations) * [Zonal](/compute/docs/reference/rest/{$api_version}/zoneOperations)
+      #
       # You can use an operation resource to manage asynchronous API requests. For more information, read Handling API responses.
       #
       # Operations can be global, regional or zonal.
-      # - For global operations, use the globalOperations resource.
-      # - For regional operations, use the regionOperations resource.
-      # - For zonal operations, use the zonalOperations resource.
+      # - For global operations, use the `globalOperations` resource.
+      # - For regional operations, use the `regionOperations` resource.
+      # - For zonal operations, use the `zonalOperations` resource.
       #
-      # For more information, read  Global, Regional, and Zonal Resources. (== resource_for v1.globalOperations ==) (== resource_for beta.globalOperations ==) (== resource_for v1.regionOperations ==) (== resource_for beta.regionOperations ==) (== resource_for v1.zoneOperations ==) (== resource_for beta.zoneOperations ==)
+      # For more information, read  Global, Regional, and Zonal Resources. (== resource_for {$api_version}.globalOperations ==) (== resource_for {$api_version}.regionOperations ==) (== resource_for {$api_version}.zoneOperations ==)
     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
     "clientOperationId": "A String", # [Output Only] The value of `requestId` if you provided it in the request. Not present otherwise.
     "creationTimestamp": "A String", # [Deprecated] This field is deprecated.
-    "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
+    "id": "A String", # [Output Only] The unique identifier for the operation. This identifier is defined by the server.
     "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only applicable when performing per-zone operations.
     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
-    "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
-    "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
+    "operationType": "A String", # [Output Only] The type of operation, such as `insert`, `update`, or `delete`, and so on.
+    "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as `NOT FOUND`.
     "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
-    "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
+    "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a `404` means the resource was not found.
     "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
-    "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
+    "status": "A String", # [Output Only] The status of the operation, which can be one of the following: `PENDING`, `RUNNING`, or `DONE`.
     "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
     "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
       {
@@ -1837,10 +2068,10 @@
       },
     ],
     "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
-    "user": "A String", # [Output Only] User who requested the operation, for example: user@example.com.
+    "user": "A String", # [Output Only] User who requested the operation, for example: `user@example.com`.
     "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
-    "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
-    "name": "A String", # [Output Only] Name of the resource.
+    "kind": "compute#operation", # [Output Only] Type of the resource. Always `compute#operation` for Operation resources.
+    "name": "A String", # [Output Only] Name of the operation.
     "region": "A String", # [Output Only] The URL of the region where the operation resides. Only applicable when performing regional operations.
     "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
       "errors": [ # [Output Only] The array of errors encountered while processing this operation.