Method source

corpus/java/training/guava/graph/Network.java:334–334

For a directed graph, returns the node for which edge is an outgoing edge. For an undirected graph, throws an UnsupportedOperationException.

(Object edge)

   * For an undirected graph, throws an {@link UnsupportedOperationException}.
   */
  N source(Object edge);

  /**
   * For a directed graph, returns the node for which {@code edge} is an incoming edge.