# File lib/webmock/util/headers.rb, line 21
      def self.sorted_headers_string(headers)
        headers = WebMock::Util::Headers.normalize_headers(headers)
        str = '{'
        str << headers.map do |k,v|
          v = case v
            when Regexp then v.inspect
            when Array then "["+v.map{|v| "'#{v.to_s}'"}.join(", ")+"]"
            else "'#{v.to_s}'"
          end
          "'#{k}'=>#{v}"
        end.sort.join(", ")
        str << '}'
      end