# File lib/aws/core/inflection.rb, line 20
      def ruby_name(aws_name)

        #aws_name.sub(/^.*:/, '').
        #  gsub(/[A-Z]+[a-z]+/){|str| "_#{str.downcase}_" }.
        #  gsub(/(^_|_$)/, '').
        #  gsub(/__/, '_').
        #  downcase

        return 'etag' if aws_name == 'ETag'

        aws_name.
          sub(/^.*:/, '').                          # strip namespace
          gsub(/([A-Z0-9]+)([A-Z][a-z])/, '\1_\2'). # split acronyms from words
          scan(/[a-z]+|\d+|[A-Z0-9]+[a-z]*/).       # split remaining words
          join('_').downcase                        # join parts _ and downcase

      end