code: func (c *Callbacks) OnCDOTAUserMsg_SendStatPopup(fn func(*dota.CDOTAUserMsg_SendStatPopup) error) {
  	c.onCDOTAUserMsg_SendStatPopup = append(c.onCDOTAUserMsg_SendStatPopup, fn)
  }
docs: // OnCDOTAUserMsg_SendStatPopup registers a callback for EDotaUserMessages_DOTA_UM_SendStatPopup