+import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeAttrBuilder;
+
+abstract class AbstractImmutableNormalizedNodeBuilder<I extends YangInstanceIdentifier.PathArgument, V, R extends NormalizedNode<I, ?>>
+ implements NormalizedNodeAttrBuilder<I,V,R> {
+
+ private Map<QName, String> attributes = Collections.emptyMap();
+ private I nodeIdentifier;
+ private V value;