# File lib/stella/report.rb, line 263
      def response_header name=nil
        @response_headers_hash ||= {}
        if @response_headers_hash.empty? && @response_headers
          @response_headers_hash = parse(@response_headers)
        end
        name.nil? ? @response_headers_hash : @response_headers_hash[name.to_s.upcase]
      end