# File lib/active_resource/base.rb, line 282
      def format=(mime_type_reference_or_format)
        format = mime_type_reference_or_format.is_a?(Symbol) ? 
          ActiveResource::Formats[mime_type_reference_or_format] : mime_type_reference_or_format

        write_inheritable_attribute("format", format)
        connection.format = format if site
      end