Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/compute_beta.regionInstanceGroups.html b/docs/dyn/compute_beta.regionInstanceGroups.html
index a12a279..4f60b72 100644
--- a/docs/dyn/compute_beta.regionInstanceGroups.html
+++ b/docs/dyn/compute_beta.regionInstanceGroups.html
@@ -90,7 +90,7 @@
   <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="#setNamedPorts">setNamedPorts(project, region, instanceGroup, body)</a></code></p>
+  <code><a href="#setNamedPorts">setNamedPorts(project, region, instanceGroup, body, requestId=None)</a></code></p>
 <p class="firstline">Sets the named ports for the specified regional instance group.</p>
 <p class="toc_element">
   <code><a href="#testIamPermissions">testIamPermissions(project, region, resource, body)</a></code></p>
@@ -108,15 +108,21 @@
 Returns:
   An object of the form:
 
-    {
+    { # Represents an unmanaged Instance Group resource.
+        #
+        # Use unmanaged instance groups if you need to apply load balancing to groups of heterogeneous instances or if you need to manage the instances yourself. For more information, read  Instance groups.
+        #
+        # For zonal unmanaged Instance Group, use instanceGroups resource.
+        #
+        # For regional unmanaged Instance Group, use regionInstanceGroups resource. (== resource_for beta.instanceGroups ==) (== resource_for v1.instanceGroups ==) (== resource_for beta.regionInstanceGroups ==) (== resource_for v1.regionInstanceGroups ==)
       "size": 42, # [Output Only] The total number of instances in the instance group.
       "kind": "compute#instanceGroup", # [Output Only] The resource type, which is always compute#instanceGroup for instance groups.
       "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
       "zone": "A String", # [Output Only] The URL of the zone where the instance group is located (for zonal resources).
-      "region": "A String", # The URL of the region where the instance group is located (for regional resources).
+      "region": "A String", # [Output Only] The URL of the region where the instance group is located (for regional resources).
       "network": "A String", # The URL of the network to which all instances in the instance group belong.
       "fingerprint": "A String", # [Output Only] The fingerprint of the named ports. The system uses this fingerprint to detect conflicts when multiple users change the named ports concurrently.
-      "subnetwork": "A String", # The URL of the subnetwork to which all instances in the instance group belong.
+      "subnetwork": "A String", # [Output Only] The URL of the subnetwork to which all instances in the instance group belong.
       "namedPorts": [ # Assigns a name to a port number. For example: {name: "http", port: 80}
           #
           # This allows the system to reference ports by the assigned name instead of a port number. Named ports can also contain multiple ports. For example: [{name: "http", port: 80},{name: "http", port: 8080}]
@@ -148,31 +154,36 @@
 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, Sets a filter expression for filtering listed resources, in the form filter={expression}. Your {expression} must be in the format: field_name comparison_string literal_string.
+  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 <.
 
-The field_name is the name of the field you want to compare. Only atomic field types are supported (string, number, boolean). The comparison_string must be either eq (equals) or ne (not equals). The literal_string is the string value to filter to. The literal value must be valid for the type of field you are filtering by (string, number, boolean). For string fields, the literal value is interpreted as a regular expression using RE2 syntax. The literal value must match the entire field.
+For example, if you are filtering Compute Engine instances, you can exclude instances named example-instance by specifying name != example-instance.
 
-For example, to filter for instances that do not have a name of example-instance, you would use filter=name ne 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 filter on nested fields. For example, you could filter on instances that have set the scheduling.automaticRestart field to true. Use filtering on nested fields to take advantage of labels to organize and search for results based on label values.
-
-To filter on multiple expressions, provide each separate expression within parentheses. For example, (scheduling.automaticRestart eq true) (zone eq us-central1-f). Multiple expressions are treated as AND expressions, meaning that resources must match all expressions to pass the filters.
+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:
 
     { # Contains a list of InstanceGroup resources.
     "nextPageToken": "A String", # [Output Only] This token allows you to get the next page of results for list requests. If the number of results is larger than maxResults, use the nextPageToken as a value for the query parameter pageToken in the next list request. Subsequent list requests will have their own nextPageToken to continue paging through the results.
+    "kind": "compute#regionInstanceGroupList", # The resource type.
     "items": [ # A list of InstanceGroup resources.
-      {
+      { # Represents an unmanaged Instance Group resource.
+            #
+            # Use unmanaged instance groups if you need to apply load balancing to groups of heterogeneous instances or if you need to manage the instances yourself. For more information, read  Instance groups.
+            #
+            # For zonal unmanaged Instance Group, use instanceGroups resource.
+            #
+            # For regional unmanaged Instance Group, use regionInstanceGroups resource. (== resource_for beta.instanceGroups ==) (== resource_for v1.instanceGroups ==) (== resource_for beta.regionInstanceGroups ==) (== resource_for v1.regionInstanceGroups ==)
           "size": 42, # [Output Only] The total number of instances in the instance group.
           "kind": "compute#instanceGroup", # [Output Only] The resource type, which is always compute#instanceGroup for instance groups.
           "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
           "zone": "A String", # [Output Only] The URL of the zone where the instance group is located (for zonal resources).
-          "region": "A String", # The URL of the region where the instance group is located (for regional resources).
+          "region": "A String", # [Output Only] The URL of the region where the instance group is located (for regional resources).
           "network": "A String", # The URL of the network to which all instances in the instance group belong.
           "fingerprint": "A String", # [Output Only] The fingerprint of the named ports. The system uses this fingerprint to detect conflicts when multiple users change the named ports concurrently.
-          "subnetwork": "A String", # The URL of the subnetwork to which all instances in the instance group belong.
+          "subnetwork": "A String", # [Output Only] The URL of the subnetwork to which all instances in the instance group belong.
           "namedPorts": [ # Assigns a name to a port number. For example: {name: "http", port: 80}
               #
               # This allows the system to reference ports by the assigned name instead of a port number. Named ports can also contain multiple ports. For example: [{name: "http", port: 80},{name: "http", port: 8080}]
@@ -189,9 +200,19 @@
           "name": "A String", # The name of the instance group. The name must be 1-63 characters long, and comply with RFC1035.
         },
     ],
-    "kind": "compute#regionInstanceGroupList", # The resource type.
-    "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
-    "selfLink": "A String", # [Output Only] The URL for this resource type. The server generates this URL.
+    "warning": { # [Output Only] Informational warning message.
+      "message": "A String", # [Output Only] A human-readable description of the warning code.
+      "code": "A String", # [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
+      "data": [ # [Output Only] Metadata about this warning in key: value format. For example:
+          # "data": [ { "key": "scope", "value": "zones/us-east1-d" }
+        {
+          "value": "A String", # [Output Only] A warning data value corresponding to the key.
+          "key": "A String", # [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
+        },
+      ],
+    },
+    "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>
 </div>
 
@@ -218,22 +239,21 @@
 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, Sets a filter expression for filtering listed resources, in the form filter={expression}. Your {expression} must be in the format: field_name comparison_string literal_string.
+  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 <.
 
-The field_name is the name of the field you want to compare. Only atomic field types are supported (string, number, boolean). The comparison_string must be either eq (equals) or ne (not equals). The literal_string is the string value to filter to. The literal value must be valid for the type of field you are filtering by (string, number, boolean). For string fields, the literal value is interpreted as a regular expression using RE2 syntax. The literal value must match the entire field.
+For example, if you are filtering Compute Engine instances, you can exclude instances named example-instance by specifying name != example-instance.
 
-For example, to filter for instances that do not have a name of example-instance, you would use filter=name ne 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 filter on nested fields. For example, you could filter on instances that have set the scheduling.automaticRestart field to true. Use filtering on nested fields to take advantage of labels to organize and search for results based on label values.
-
-To filter on multiple expressions, provide each separate expression within parentheses. For example, (scheduling.automaticRestart eq true) (zone eq us-central1-f). Multiple expressions are treated as AND expressions, meaning that resources must match all expressions to pass the filters.
+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:
 
     {
     "nextPageToken": "A String", # [Output Only] This token allows you to get the next page of results for list requests. If the number of results is larger than maxResults, use the nextPageToken as a value for the query parameter pageToken in the next list request. Subsequent list requests will have their own nextPageToken to continue paging through the results.
-    "items": [ # A list of instances and any named ports that are assigned to those instances.
+    "kind": "compute#regionInstanceGroupsListInstances", # The resource type.
+    "items": [ # A list of InstanceWithNamedPorts resources.
       {
         "status": "A String", # [Output Only] The status of the instance.
         "instance": "A String", # [Output Only] The URL of the instance.
@@ -245,9 +265,19 @@
         ],
       },
     ],
-    "kind": "compute#regionInstanceGroupsListInstances", # The resource type.
-    "id": "A String", # [Output Only] Unique identifier for the resource. Defined by the server.
-    "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
+    "warning": { # [Output Only] Informational warning message.
+      "message": "A String", # [Output Only] A human-readable description of the warning code.
+      "code": "A String", # [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
+      "data": [ # [Output Only] Metadata about this warning in key: value format. For example:
+          # "data": [ { "key": "scope", "value": "zones/us-east1-d" }
+        {
+          "value": "A String", # [Output Only] A warning data value corresponding to the key.
+          "key": "A String", # [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
+        },
+      ],
+    },
+    "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>
 </div>
 
@@ -280,7 +310,7 @@
 </div>
 
 <div class="method">
-    <code class="details" id="setNamedPorts">setNamedPorts(project, region, instanceGroup, body)</code>
+    <code class="details" id="setNamedPorts">setNamedPorts(project, region, instanceGroup, body, requestId=None)</code>
   <pre>Sets the named ports for the specified regional instance group.
 
 Args:
@@ -300,16 +330,30 @@
     "fingerprint": "A String", # The fingerprint of the named ports information for this instance group. Use this optional property to prevent conflicts when multiple users change the named ports settings concurrently. Obtain the fingerprint with the instanceGroups.get method. Then, include the fingerprint in your request to ensure that you do not overwrite changes that were applied from another concurrent request.
   }
 
+  requestId: string, An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed.
+
+For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments.
+
+The request ID must be a valid UUID with the exception that zero UUID is not supported (00000000-0000-0000-0000-000000000000).
 
 Returns:
   An object of the form:
 
-    { # An Operation resource, used to manage asynchronous API requests.
+    { # Represents an Operation resource.
+      #
+      # 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 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 ==)
     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
-    "clientOperationId": "A String", # [Output Only] Reserved for future use.
+    "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.
-    "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only available when performing per-zone operations.
+    "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.
@@ -335,7 +379,7 @@
     "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.
-    "region": "A String", # [Output Only] The URL of the region where the operation resides. Only available when performing regional operations.
+    "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.
         {
@@ -358,7 +402,7 @@
 Args:
   project: string, Project ID for this request. (required)
   region: string, The name of the region for this request. (required)
-  resource: string, Name of the resource for this request. (required)
+  resource: string, Name or id of the resource for this request. (required)
   body: object, The request body. (required)
     The object takes the form of: