# File lib/fog/google/models/storage/file.rb, line 48
        def copy(target_directory_key, target_file_key)
          requires :directory, :key
          connection.copy_object(directory.key, key, target_directory_key, target_file_key)
          target_directory = connection.directories.new(:key => target_directory_key)
          target_directory.files.get(target_file_key)
        end