android/guava/src/com/google/common/graph/ValueGraphBuilder.java
public <N1 extends N, V1 extends V> ImmutableValueGraph.Builder<N1, V1> immutable() {
    ValueGraphBuilder<N1, V1> castBuilder = cast();
    return new ImmutableValueGraph.Builder<>(castBuilder);
  }
public <N1 extends N, V1 extends V> ImmutableValueGraph.Builder<N1, V1> immutable() {
    ValueGraphBuilder<N1, V1> castBuilder = cast();
    return new ImmutableValueGraph.Builder<>(castBuilder);
  }
Returns an {@link ImmutableValueGraph#Builder} with the properties of this {@link
ValueGraphBuilder}.

<p>The returned builder can be used for populating an {@link ImmutableValueGraph}.

@since NEXT