code: func (c *Callbacks) OnCUserMessageVoiceSubtitle(fn func(*dota.CUserMessageVoiceSubtitle) error) {
  	c.onCUserMessageVoiceSubtitle = append(c.onCUserMessageVoiceSubtitle, fn)
  }
docs: // OnCUserMessageVoiceSubtitle registers a callback for EBaseUserMessages_UM_VoiceSubtitle