code: func (c *Callbacks) OnCDOTAUserMsg_LocationPing(fn func(*dota.CDOTAUserMsg_LocationPing) error) {
  	c.onCDOTAUserMsg_LocationPing = append(c.onCDOTAUserMsg_LocationPing, fn)
  }
docs: // OnCDOTAUserMsg_LocationPing registers a callback for EDotaUserMessages_DOTA_UM_LocationPing