/guava/android/guava/src/com/google/common/graph/ForwardingGraph.java
return delegate( ).successors( node) ;
return delegate ( ) .predecessors ( node ) ;
@Override public Set<N> adjacentNodes(N node) { return delegate().adjacentNodes(node); } @Override public Set<N> predecessors(N node) { <extra_id_0> } @Override public Set<N> successors(N node) { return delegate().successors(node); } @Override