code: func (c *Callbacks) OnCDOTAUserMsg_SpeechBubble(fn func(*dota.CDOTAUserMsg_SpeechBubble) error) {
  	c.onCDOTAUserMsg_SpeechBubble = append(c.onCDOTAUserMsg_SpeechBubble, fn)
  }
docs: // OnCDOTAUserMsg_SpeechBubble registers a callback for EDotaUserMessages_DOTA_UM_SpeechBubble