code: func (r *Registry) Any(kind string) mo.Entity {
  	r.m.Lock()
  	defer r.m.Unlock()
  
  	for ref, val := range r.objects {
  		if ref.Type == kind {
  			return val.(mo.Entity)
  		}
  	}
  
  	return nil
  }
docs: // Any returns the first instance of entity type specified by kind.