@Override public Set<N> predecessors() { return adjacentNodes(); }
@Override public Set<N> successors() { return adjacentNodes(); }
@Override public Set<N> predecessors() { return adjacentNodes(); }
@Override public Set<N> successors() { return adjacentNodes(); }
@Override public Set<N> predecessors() { return adjacentNodes(); }
@Override public Set<N> successors() { return adjacentNodes(); }
@Override public Set<N> predecessors() { return adjacentNodes(); }
@Override public Set<N> successors() { return adjacentNodes(); }
@Override public Set<N> predecessors() { return adjacentNodes(); }
@Override public Set<N> successors() { return adjacentNodes(); }