Remove Moderator Sample because there is no Moderator API.
Reviewed in https://codereview.appspot.com/6776055/.
diff --git a/docs/dyn/compute_v1beta12.images.html b/docs/dyn/compute_v1beta12.images.html
index 975e53d..976550c 100644
--- a/docs/dyn/compute_v1beta12.images.html
+++ b/docs/dyn/compute_v1beta12.images.html
@@ -147,7 +147,7 @@
       "kind": "compute#image", # Type of the resource.
       "description": "A String", # Textual description of the resource; provided by the client when the resource is created.
       "rawDisk": { # The raw disk image parameters.
-        "containerType": "A String", # The format used to encode and transmit the block device. Should be TAR. This is just a container and transmission format and not a runtime format. Provided by the client when the disk image is created.
+        "containerType": "TAR", # The format used to encode and transmit the block device. Should be TAR. This is just a container and transmission format and not a runtime format. Provided by the client when the disk image is created.
         "source": "A String", # The full Google Cloud Storage URL where the disk image is stored; provided by the client when the disk image is created.
         "sha1Checksum": "A String", # An optional SHA1 checksum of the disk image before unpackaging; provided by the client when the disk image is created.
       },
@@ -155,7 +155,7 @@
       "diskSnapshot": { # Not yet implemented.
         "source": "A String", # URL of the disk snapshot.
       },
-      "sourceType": "A String", # Must be "RAW"; provided by the client when the disk image is created.
+      "sourceType": "RAW", # Must be "RAW"; provided by the client when the disk image is created.
       "creationTimestamp": "A String", # Creation timestamp in RFC3339 text format (output only).
       "id": "A String", # Unique identifier for the resource; defined by the server (output only).
       "selfLink": "A String", # Server defined URL for the resource (output only).
@@ -176,7 +176,7 @@
     "kind": "compute#image", # Type of the resource.
     "description": "A String", # Textual description of the resource; provided by the client when the resource is created.
     "rawDisk": { # The raw disk image parameters.
-      "containerType": "A String", # The format used to encode and transmit the block device. Should be TAR. This is just a container and transmission format and not a runtime format. Provided by the client when the disk image is created.
+      "containerType": "TAR", # The format used to encode and transmit the block device. Should be TAR. This is just a container and transmission format and not a runtime format. Provided by the client when the disk image is created.
       "source": "A String", # The full Google Cloud Storage URL where the disk image is stored; provided by the client when the disk image is created.
       "sha1Checksum": "A String", # An optional SHA1 checksum of the disk image before unpackaging; provided by the client when the disk image is created.
     },
@@ -184,7 +184,7 @@
     "diskSnapshot": { # Not yet implemented.
       "source": "A String", # URL of the disk snapshot.
     },
-    "sourceType": "A String", # Must be "RAW"; provided by the client when the disk image is created.
+    "sourceType": "RAW", # Must be "RAW"; provided by the client when the disk image is created.
     "creationTimestamp": "A String", # Creation timestamp in RFC3339 text format (output only).
     "id": "A String", # Unique identifier for the resource; defined by the server (output only).
     "selfLink": "A String", # Server defined URL for the resource (output only).
@@ -240,13 +240,13 @@
   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": [ # The disk image resources.
       {
           "kind": "compute#image", # Type of the resource.
           "description": "A String", # Textual description of the resource; provided by the client when the resource is created.
           "rawDisk": { # The raw disk image parameters.
-            "containerType": "A String", # The format used to encode and transmit the block device. Should be TAR. This is just a container and transmission format and not a runtime format. Provided by the client when the disk image is created.
+            "containerType": "TAR", # The format used to encode and transmit the block device. Should be TAR. This is just a container and transmission format and not a runtime format. Provided by the client when the disk image is created.
             "source": "A String", # The full Google Cloud Storage URL where the disk image is stored; provided by the client when the disk image is created.
             "sha1Checksum": "A String", # An optional SHA1 checksum of the disk image before unpackaging; provided by the client when the disk image is created.
           },
@@ -254,7 +254,7 @@
           "diskSnapshot": { # Not yet implemented.
             "source": "A String", # URL of the disk snapshot.
           },
-          "sourceType": "A String", # Must be "RAW"; provided by the client when the disk image is created.
+          "sourceType": "RAW", # Must be "RAW"; provided by the client when the disk image is created.
           "creationTimestamp": "A String", # Creation timestamp in RFC3339 text format (output only).
           "id": "A String", # Unique identifier for the resource; defined by the server (output only).
           "selfLink": "A String", # Server defined URL for the resource (output only).