void add (GraphVertex from, GraphVertex to, bool via_sends_only);
bool has (GraphVertex from, GraphVertex to, bool* via_sends_only);
+ bool feeds (GraphVertex from, GraphVertex to);
std::set<GraphVertex> from (GraphVertex r) const;
void remove (GraphVertex from, GraphVertex to);
bool has_none_to (GraphVertex to) const;
typedef std::multimap<GraphVertex, std::pair<GraphVertex, bool> > EdgeMapWithSends;
EdgeMapWithSends::iterator find_in_from_to_with_sends (GraphVertex, GraphVertex);
+ EdgeMapWithSends::iterator find_recursively_in_from_to_with_sends (GraphVertex, GraphVertex);
/** map of edges with from as `first' and to as `second' */
EdgeMap _from_to;