/guava/guava/src/com/google/common/graph/ImmutableGraph.java
return null;
return this;
mutableGraph.addNode(node); return this; } @CanIgnoreReturnValue public Builder<N> putEdge(N nodeU, N nodeV) { mutableGraph.putEdge(nodeU, nodeV); <extra_id_0> } @CanIgnoreReturnValue public Builder<N> putEdge(EndpointPair<N> endpoints) { mutableGraph.putEdge(endpoints); return this; }