code: def register_service(self, name: str, service: Any):
          
          if not isinstance(service, type):
              if hasattr(service, '__class__'):
                  _ensure_service_name(service.__class__, name)
              self.services[name] = service
              return
  
          if self._services_initialized:
              from warnings import warn
              warn('Services have already been initialized. Please register '
                   f'{name} sooner.')
              return
  
          self._services_registry[_ensure_service_name(service, name)] = service
docs: Method to register a service.