/guava/android/guava/src/com/google/common/graph/EndpointPair.java
super( target) ;
super ( source, target ) ;
@Override public abstract boolean equals(@CheckForNull Object obj); @Override public abstract int hashCode(); private static final class Ordered<N> extends EndpointPair<N> { private Ordered(N source, N target) { <extra_id_0> } @Override public N source() { return nodeU(); } @Override