# File lib/webmock/http_lib_adapters/patron.rb, line 37
      def handle_file_name(req, webmock_response)
        if req.action == :get && req.file_name
          begin
            File.open(req.file_name, "w") do |f|
              f.write webmock_response.body
            end
          rescue Errno::EACCES
            raise ArgumentError.new("Unable to open specified file.")
          end
        end
      end