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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def Add(self, request, callback=None):
 """Add a new request. Args: request: A http_wrapper.Request to add to the batch. callback: A callback to be called for this response, of the form callback(response, exception). The first parameter is the deserialized response object. The second is an apiclient.errors.HttpError exception object if an HTTP error occurred while processing the request, or None if no errors occurred. Returns: None """

        handler = RequestResponseAndHandler(request, None, callback)
        self.__request_response_handlers[self._NewId()] = handler