Remove Moderator Sample because there is no Moderator API.
Reviewed in https://codereview.appspot.com/6776055/.
diff --git a/docs/dyn/compute_v1beta12.instances.html b/docs/dyn/compute_v1beta12.instances.html
index b0c6fc2..d6ecd92 100644
--- a/docs/dyn/compute_v1beta12.instances.html
+++ b/docs/dyn/compute_v1beta12.instances.html
@@ -109,7 +109,7 @@
 
 {
   "kind": "compute#accessConfig", # Type of the resource.
-  "type": "A String", # Type of configuration. Must be set to "ONE_TO_ONE_NAT". This configures port-for-port NAT to the internet.
+  "type": "ONE_TO_ONE_NAT", # Type of configuration. Must be set to "ONE_TO_ONE_NAT". This configures port-for-port NAT to the internet.
   "name": "A String", # Name of this access configuration.
   "natIP": "A String", # An external IP address associated with this instance. Specify an unused static IP address available to the project. If left blank, the external IP will be drawn from a shared ephemeral pool.
 }
@@ -284,7 +284,7 @@
           "accessConfigs": [ # Array of configurations for this interface. This specifies how this interface is configured to interact with other network services, such as connecting to the internet. Currently, ONE_TO_ONE_NAT is the only access config supported. If there are no accessConfigs specified, then this instance will have no external internet access.
             {
               "kind": "compute#accessConfig", # Type of the resource.
-              "type": "A String", # Type of configuration. Must be set to "ONE_TO_ONE_NAT". This configures port-for-port NAT to the internet.
+              "type": "ONE_TO_ONE_NAT", # Type of configuration. Must be set to "ONE_TO_ONE_NAT". This configures port-for-port NAT to the internet.
               "name": "A String", # Name of this access configuration.
               "natIP": "A String", # An external IP address associated with this instance. Specify an unused static IP address available to the project. If left blank, the external IP will be drawn from a shared ephemeral pool.
             },
@@ -301,7 +301,7 @@
         "items": [ # Array of key/value pairs. The total size of all keys and values must be less than 512 KB.
           {
             "value": "A String", # Value for the metadata entry. These are free-form strings, and only have meaning as interpreted by the image running in the instance. The only restriction placed on values is that their size must be less than or equal to 15000 bytes.
-            "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must not conflict with any other metadata keys for the project.
+            "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must be unique.
           },
         ],
         "kind": "compute#metadata", # Type of the resource.
@@ -356,7 +356,7 @@
         "accessConfigs": [ # Array of configurations for this interface. This specifies how this interface is configured to interact with other network services, such as connecting to the internet. Currently, ONE_TO_ONE_NAT is the only access config supported. If there are no accessConfigs specified, then this instance will have no external internet access.
           {
             "kind": "compute#accessConfig", # Type of the resource.
-            "type": "A String", # Type of configuration. Must be set to "ONE_TO_ONE_NAT". This configures port-for-port NAT to the internet.
+            "type": "ONE_TO_ONE_NAT", # Type of configuration. Must be set to "ONE_TO_ONE_NAT". This configures port-for-port NAT to the internet.
             "name": "A String", # Name of this access configuration.
             "natIP": "A String", # An external IP address associated with this instance. Specify an unused static IP address available to the project. If left blank, the external IP will be drawn from a shared ephemeral pool.
           },
@@ -373,7 +373,7 @@
       "items": [ # Array of key/value pairs. The total size of all keys and values must be less than 512 KB.
         {
           "value": "A String", # Value for the metadata entry. These are free-form strings, and only have meaning as interpreted by the image running in the instance. The only restriction placed on values is that their size must be less than or equal to 15000 bytes.
-          "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must not conflict with any other metadata keys for the project.
+          "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must be unique.
         },
       ],
       "kind": "compute#metadata", # Type of the resource.
@@ -429,7 +429,7 @@
   An object of the form:
 
     {
-    "nextPageToken": "A String", # A token used to continue a truncated list request.
+    "nextPageToken": "A String", # A token used to continue a truncated list request (output only).
     "items": [ # A list of instance resources.
       {
           "status": "A String", # Instance status. One of the following values: "PROVISIONING", "STAGING", "RUNNING" (output only).
@@ -469,7 +469,7 @@
               "accessConfigs": [ # Array of configurations for this interface. This specifies how this interface is configured to interact with other network services, such as connecting to the internet. Currently, ONE_TO_ONE_NAT is the only access config supported. If there are no accessConfigs specified, then this instance will have no external internet access.
                 {
                   "kind": "compute#accessConfig", # Type of the resource.
-                  "type": "A String", # Type of configuration. Must be set to "ONE_TO_ONE_NAT". This configures port-for-port NAT to the internet.
+                  "type": "ONE_TO_ONE_NAT", # Type of configuration. Must be set to "ONE_TO_ONE_NAT". This configures port-for-port NAT to the internet.
                   "name": "A String", # Name of this access configuration.
                   "natIP": "A String", # An external IP address associated with this instance. Specify an unused static IP address available to the project. If left blank, the external IP will be drawn from a shared ephemeral pool.
                 },
@@ -486,7 +486,7 @@
             "items": [ # Array of key/value pairs. The total size of all keys and values must be less than 512 KB.
               {
                 "value": "A String", # Value for the metadata entry. These are free-form strings, and only have meaning as interpreted by the image running in the instance. The only restriction placed on values is that their size must be less than or equal to 15000 bytes.
-                "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must not conflict with any other metadata keys for the project.
+                "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must be unique.
               },
             ],
             "kind": "compute#metadata", # Type of the resource.