code: func (s *Server) SetServices(svcs []*ble.Service) error {
  	s.Lock()
  	defer s.Unlock()
  	s.svcs = append(defaultServices(s.name), svcs...)
  	s.db = att.NewDB(s.svcs, uint16(1)) // ble attrs start at 1
  	return nil
  }
docs: // SetServices ...