code: func (a customResourceStrategy) MatchCustomResourceDefinitionStorage(label labels.Selector, field fields.Selector) apiserverstorage.SelectionPredicate {
  	return apiserverstorage.SelectionPredicate{
  		Label:    label,
  		Field:    field,
  		GetAttrs: a.GetAttrs,
  	}
  }
docs: // MatchCustomResourceDefinitionStorage is the filter used by the generic etcd backend to route
  // watch events from etcd to clients of the apiserver only interested in specific
  // labels/fields.