code: func (c *Callbacks) OnCDOTAUserMsg_HeroRelicProgress(fn func(*dota.CDOTAUserMsg_HeroRelicProgress) error) {
  	c.onCDOTAUserMsg_HeroRelicProgress = append(c.onCDOTAUserMsg_HeroRelicProgress, fn)
  }
docs: // OnCDOTAUserMsg_HeroRelicProgress registers a callback for EDotaUserMessages_DOTA_UM_HeroRelicProgress