code: func (c *Callbacks) OnCSVCMsg_PacketEntities(fn func(*dota.CSVCMsg_PacketEntities) error) {
  	c.onCSVCMsg_PacketEntities = append(c.onCSVCMsg_PacketEntities, fn)
  }
docs: // OnCSVCMsg_PacketEntities registers a callback for SVC_Messages_svc_PacketEntities