@CustomType.Setter
        public Builder apiGroup(@Nullable String apiGroup) {

            this.apiGroup = apiGroup;
            return this;
        }
@return Namespace is the namespace of resource being referenced Note that when a namespace is specified, a gateway.networking.k8s.io/ReferenceGrant object is required in the referent namespace to allow that namespace&#39;s owner to accept the reference. See the ReferenceGrant documentation for details. (Alpha) This field requires the CrossNamespaceVolumeDataSource feature gate to be enabled.
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/outputs/TypedObjectReference.java