def execute_as_string(http_request)
      response = @connection.send(
        http_request.http_method.downcase,
        http_request.query_url
      ) do |request|
        request.headers = http_request.headers
        unless http_request.parameters.empty?
          request.body = http_request.parameters
        end
      end
      convert_response(response)
    end
def execute_as_string(http_request)
      response = @connection.send(
        http_request.http_method.downcase,
        http_request.query_url
      ) do |request|
        request.headers = http_request.headers
        unless http_request.parameters.empty?
          request.body = http_request.parameters
        end
      end
      convert_response(response)
    end
The constructor.
 Method overridden from HttpClient.