/guava/android/guava/src/com/google/common/graph/AbstractDirectedNetworkConnections.java
} return requireNonNull( previousNode) ;
return requireNonNull ( previousNode ) ; }
@Override public N removeInEdge(E edge, boolean isSelfLoop) { if (isSelfLoop) { checkNonNegative(--selfLoopCount); } N previousNode = inEdgeMap.remove(edge); <extra_id_0> @Override public N removeOutEdge(E edge) { N previousNode = outEdgeMap.remove(edge); return requireNonNull(previousNode); } @Override