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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 start(self, host='127.0.0.1', port=None, debug=False, **kwargs):
 """ Start the built in webserver, bound to the host and port you'd like. Default host is `127.0.0.1` and port 8080. :param host: The host you want to bind the build in webserver to :param port: The port number you want the webserver to run on :param debug: Set to `True` to enable debug level logging :param kwargs: Additional arguments you'd like to pass to Flask """

        self.server.run(host=host, port=port, debug=debug, **kwargs)