code: def get_service(self, bundle, reference):
          # type: (Any, ServiceReference) -> Any
          
          with self.__svc_lock:
              if reference.is_factory():
                  return self.__get_service_from_factory(bundle, reference)
  
              # Be sure to have the instance
              try:
                  service = self.__svc_registry[reference]
  
                  # Indicate the dependency
                  imports = self.__bundle_imports.setdefault(bundle, {})
                  imports.setdefault(reference, _UsageCounter()).inc()
                  reference.used_by(bundle)
                  return service
              except KeyError:
                  # Not found
                  raise BundleException(
                      "Service not found (reference: {0})".format(reference)
                  )
docs: Retrieves the service corresponding to the given reference
  
          :param bundle: The bundle requiring the service
          :param reference: A service reference
          :return: The requested service
          :raise BundleException: The service could not be found