code: func (c *Context) AnswerInlineQueryWithPM(text string, parameter string) error {
  	bot := c.Bot()
  	_, err := bot.API.AnswerInlineQuery(tg.InlineConfig{IsPersonal: true, InlineQueryID: c.InlineQuery.ID, SwitchPMText: text, SwitchPMParameter: parameter})
  	n := time.Now()
  	c.inlineQueryAnsweredAt = &n
  	return err
  }
docs: // AnswerInlineQueryWithPM answer the inline query that triggered this request with Private Message redirect tip