code: func (c *Callbacks) OnCDOTAUserMsg_QuestStatus(fn func(*dota.CDOTAUserMsg_QuestStatus) error) {
  	c.onCDOTAUserMsg_QuestStatus = append(c.onCDOTAUserMsg_QuestStatus, fn)
  }
docs: // OnCDOTAUserMsg_QuestStatus registers a callback for EDotaUserMessages_DOTA_UM_QuestStatus