code: func (c *Comment) Like() error {
  	data, err := c.inst.prepareData()
  	if err != nil {
  		return err
  	}
  
  	_, err = c.inst.sendRequest(
  		&reqOptions{
  			Endpoint: fmt.Sprintf(urlCommentLike, c.getid()),
  			Query:    generateSignature(data),
  			IsPost:   true,
  		},
  	)
  	return err
  }
docs: // Like likes comment.