ImmutableValueGraph.Builder<N,V> | 
ImmutableValueGraph.Builder.addNode(N node) | 
 Adds node if it is not already present. 
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<N1 extends N,V1 extends V> ImmutableValueGraph.Builder<N1,V1> | 
ValueGraphBuilder.immutable() | 
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ImmutableValueGraph.Builder<N,V> | 
ImmutableValueGraph.Builder.putEdgeValue(EndpointPair<N> endpoints,
            V value) | 
 Adds an edge connecting endpoints if one is not already present, and sets a value for
 that edge to value (overwriting the existing value, if any). 
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ImmutableValueGraph.Builder<N,V> | 
ImmutableValueGraph.Builder.putEdgeValue(N nodeU,
            N nodeV,
            V value) | 
 Adds an edge connecting nodeU to nodeV if one is not already present, and
 sets a value for that edge to value (overwriting the existing value, if any). 
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