Regen docs (#364)

diff --git a/docs/dyn/compute_v1.vpnTunnels.html b/docs/dyn/compute_v1.vpnTunnels.html
index 31541f7..a359589 100644
--- a/docs/dyn/compute_v1.vpnTunnels.html
+++ b/docs/dyn/compute_v1.vpnTunnels.html
@@ -107,7 +107,7 @@
 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.
+  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.
 
@@ -131,13 +131,13 @@
               "detailedStatus": "A String", # [Output Only] Detailed status message for the VPN tunnel.
               "ikeVersion": 42, # IKE protocol version to use when establishing the VPN tunnel with peer VPN gateway. Acceptable IKE versions are 1 or 2. Default version is 2.
               "kind": "compute#vpnTunnel", # [Output Only] Type of resource. Always compute#vpnTunnel for VPN tunnels.
-              "remoteTrafficSelector": [ # Remote traffic selectors to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint.
+              "remoteTrafficSelector": [ # Remote traffic selectors to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint. Only IPv4 is supported.
                 "A String",
               ],
               "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-              "peerIp": "A String", # IP address of the peer VPN gateway.
+              "peerIp": "A String", # IP address of the peer VPN gateway. Only IPv4 is supported.
               "region": "A String", # [Output Only] URL of the region where the VPN tunnel resides.
-              "localTrafficSelector": [ # Local traffic selector to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint.
+              "localTrafficSelector": [ # Local traffic selector to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint. Only IPv4 is supported.
                 "A String",
               ],
               "targetVpnGateway": "A String", # URL of the VPN gateway with which this VPN tunnel is associated. Provided by the client when the VPN tunnel is created.
@@ -199,7 +199,7 @@
     { # An Operation resource, used to manage asynchronous API requests.
     "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.
-    "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
+    "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.
     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
@@ -259,13 +259,13 @@
       "detailedStatus": "A String", # [Output Only] Detailed status message for the VPN tunnel.
       "ikeVersion": 42, # IKE protocol version to use when establishing the VPN tunnel with peer VPN gateway. Acceptable IKE versions are 1 or 2. Default version is 2.
       "kind": "compute#vpnTunnel", # [Output Only] Type of resource. Always compute#vpnTunnel for VPN tunnels.
-      "remoteTrafficSelector": [ # Remote traffic selectors to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint.
+      "remoteTrafficSelector": [ # Remote traffic selectors to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint. Only IPv4 is supported.
         "A String",
       ],
       "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-      "peerIp": "A String", # IP address of the peer VPN gateway.
+      "peerIp": "A String", # IP address of the peer VPN gateway. Only IPv4 is supported.
       "region": "A String", # [Output Only] URL of the region where the VPN tunnel resides.
-      "localTrafficSelector": [ # Local traffic selector to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint.
+      "localTrafficSelector": [ # Local traffic selector to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint. Only IPv4 is supported.
         "A String",
       ],
       "targetVpnGateway": "A String", # URL of the VPN gateway with which this VPN tunnel is associated. Provided by the client when the VPN tunnel is created.
@@ -294,13 +294,13 @@
     "detailedStatus": "A String", # [Output Only] Detailed status message for the VPN tunnel.
     "ikeVersion": 42, # IKE protocol version to use when establishing the VPN tunnel with peer VPN gateway. Acceptable IKE versions are 1 or 2. Default version is 2.
     "kind": "compute#vpnTunnel", # [Output Only] Type of resource. Always compute#vpnTunnel for VPN tunnels.
-    "remoteTrafficSelector": [ # Remote traffic selectors to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint.
+    "remoteTrafficSelector": [ # Remote traffic selectors to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint. Only IPv4 is supported.
       "A String",
     ],
     "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-    "peerIp": "A String", # IP address of the peer VPN gateway.
+    "peerIp": "A String", # IP address of the peer VPN gateway. Only IPv4 is supported.
     "region": "A String", # [Output Only] URL of the region where the VPN tunnel resides.
-    "localTrafficSelector": [ # Local traffic selector to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint.
+    "localTrafficSelector": [ # Local traffic selector to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint. Only IPv4 is supported.
       "A String",
     ],
     "targetVpnGateway": "A String", # URL of the VPN gateway with which this VPN tunnel is associated. Provided by the client when the VPN tunnel is created.
@@ -321,7 +321,7 @@
     { # An Operation resource, used to manage asynchronous API requests.
     "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.
-    "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
+    "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.
     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
@@ -377,7 +377,7 @@
 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.
+  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.
 
@@ -399,13 +399,13 @@
           "detailedStatus": "A String", # [Output Only] Detailed status message for the VPN tunnel.
           "ikeVersion": 42, # IKE protocol version to use when establishing the VPN tunnel with peer VPN gateway. Acceptable IKE versions are 1 or 2. Default version is 2.
           "kind": "compute#vpnTunnel", # [Output Only] Type of resource. Always compute#vpnTunnel for VPN tunnels.
-          "remoteTrafficSelector": [ # Remote traffic selectors to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint.
+          "remoteTrafficSelector": [ # Remote traffic selectors to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint. Only IPv4 is supported.
             "A String",
           ],
           "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-          "peerIp": "A String", # IP address of the peer VPN gateway.
+          "peerIp": "A String", # IP address of the peer VPN gateway. Only IPv4 is supported.
           "region": "A String", # [Output Only] URL of the region where the VPN tunnel resides.
-          "localTrafficSelector": [ # Local traffic selector to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint.
+          "localTrafficSelector": [ # Local traffic selector to use when establishing the VPN tunnel with peer VPN gateway. The value should be a CIDR formatted string, for example: 192.168.0.0/16. The ranges should be disjoint. Only IPv4 is supported.
             "A String",
           ],
           "targetVpnGateway": "A String", # URL of the VPN gateway with which this VPN tunnel is associated. Provided by the client when the VPN tunnel is created.