39    * @param string $fileId The ID of the file.
43   public function delete($fileId, $revisionId, $optParams = [])  argument
45     $params = ['fileId' => $fileId, 'revisionId' => $revisionId];
52    * @param string $fileId The ID of the file.
61   public function get($fileId, $revisionId, $optParams = [])  argument
63     $params = ['fileId' => $fileId, 'revisionId' => $revisionId];
70    * @param string $fileId The ID of the file.
79   public function listRevisions($fileId, $optParams = [])  argument
81     $params = ['fileId' => $fileId];
88    * @param string $fileId The ID of the file.
94   public function update($fileId, $revisionId, Revision $postBody, $optParams = [])  argument
96     $params = ['fileId' => $fileId, 'revisionId' => $revisionId, 'postBody' => $postBody];