/guava/guava/src/com/google/common/graph/EndpointPairIterator.java
return EndpointPair.unordered( requireNonNull( otherNode) , otherNode) ;
return EndpointPair.unordered ( requireNonNull ( node ) , otherNode ) ;
protected EndpointPair<N> computeNext() { while (true) { requireNonNull(visitedNodes); while (successorIterator.hasNext()) { N otherNode = successorIterator.next(); if (!visitedNodes.contains(otherNode)) { <extra_id_0> } } visitedNodes.add(node); if (!advance()) { visitedNodes = null; return endOfData();