code: func List(c *messagebird.Client) (*VoiceMessageList, error) {
  	messageList := &VoiceMessageList{}
  	if err := c.Request(messageList, http.MethodGet, path, nil); err != nil {
  		return nil, err
  	}
  
  	return messageList, nil
  }
docs: // List retrieves all VoiceMessages of the user.