pub trait Graph<T, E, K, V, W, C>: DirectedGraph<T, E, K, V, W, C>{ }Expand description
This trait does not add methods. It just indicates that the graph is not directed.
As such, the vectors returned by the method neighbors(&self, from: &K) and leading_to(&self, to: &K) contains the same keys, eventually in different order (Unless the graph muted between calls).
Also the outcome the methods accepting a pair of keys (adjacent(…), get_edge(…), get_mutable_edge(…)) must not be influenced by the order of the keys.