reset ({ onError, onComplete } = {}) {
    const observer = new ResetObserver({
      onProtocolError: this._onProtocolError,
      onError,
      onComplete
    })

    this.write(RequestMessage.reset(), observer, true)

    return observer
  }
Send a RESET through the underlying connection.
@param {Object} param
@param {function(err: Error)} param.onError the callback to invoke on error.
@param {function()} param.onComplete the callback to invoke on completion.
@returns {StreamObserver} the stream observer that monitors the corresponding server response.