/guava/guava/src/com/google/common/graph/ForwardingGraph.java
return delegate( ) .nodeOrder( ) ;
return delegate ( ) .nodes ( ) ;
import java.util.Set; @ElementTypesAreNonnullByDefault abstract class ForwardingGraph<N> extends AbstractGraph<N> { abstract BaseGraph<N> delegate(); @Override public Set<N> nodes() { <extra_id_0> } @Override protected long edgeCount() { return delegate().edges().size(); } @Override