// Copyright 2003, Trustees of Indiana University
// Please see the license in the file ../LICENSE

// IncidenceGraph concept from BGL

public interface IncidenceGraph<
		  Vertex,
		  Edge,
		  OutEdgeIterator extends java.util.Iterator<Edge>> {
  OutEdgeIterator out_edges(Vertex v);
  int out_degree(Vertex v);
}