# File lib/aws/xml_grammar.rb, line 160
      def add_method method_name, &block
        format_value do |value|
          MetaUtils.extend_method(value = super(value), method_name, &block)
          value
        end
#           different strategey, slightly different behavior
#           element(method_name.to_s) do
#             format_value(&block)
#             force
#           end
      end