# File lib/fog/rackspace/models/storage/file.rb, line 32
        def copy(target_directory_key, target_file_key, options={})
          requires :directory, :key
          options['Content-Type'] ||= content_type if content_type
          connection.copy_object(directory.key, key, target_directory_key, target_file_key, options)
          target_directory = connection.directories.new(:key => target_directory_key)
          target_directory.files.get(target_file_key)
        end