// gathered with problem collector
                }
                return null;
            }
        };
    }

    private boolean addEdge(Path from, Path p, DefaultModelProblemCollector problems) {
        try {
            dag.addEdge(from.toString(), p.toString());
            return true;
        } catch (Graph.CycleDetectedException e) {
            problems.add(new DefaultModelProblem(

 * flightNetwork.addEdge("LAX", "ATL", 3025);
 * flightNetwork.addEdge("LAX", "ATL", 1598);
 * flightNetwork.addEdge("ATL", "LAX", 2450);
 *
 * // Building a immutable network
 * ImmutableNetwork<String, Integer> immutableNetwork =
 *     NetworkBuilder.directed()
 *         .allowsParallelEdges(true)
 *         .<String, Integer>immutable()
 *         .addEdge("LAX", "ATL", 3025)

                    // gathered with problem collector
                }
                return null;
            }
        };
    }

    private boolean addEdge(Path from, Path p, DefaultModelProblemCollector problems) {
        try {
            dag.addEdge(from.toString(), p.toString());
            return true;
        } catch (Graph.CycleDetectedException e) {
            problems.add(new DefaultModelProblem(

    edgeToReferenceNode.put(edge, nodeU);
    return true;
  }

  @Override
  @CanIgnoreReturnValue
  public boolean addEdge(EndpointPair<N> endpoints, E edge) {
    validateEndpoints(endpoints);
    return addEdge(endpoints.nodeU(), endpoints.nodeV(), edge);
  }

  @Override
  @CanIgnoreReturnValue
  public boolean removeNode(N node) {
    checkNotNull(node, "node");

    edgeToReferenceNode.put(edge, nodeU);
    return true;
  }

  @Override
  @CanIgnoreReturnValue
  public boolean addEdge(EndpointPair<N> endpoints, E edge) {
    validateEndpoints(endpoints);
    return addEdge(endpoints.nodeU(), endpoints.nodeV(), edge);
  }

  @Override
  @CanIgnoreReturnValue
  public boolean removeNode(N node) {
    checkNotNull(node, "node");

  TF_CHECK_OK(scope.DoShapeInference(launch));
  scope.graph()->AddEdge(a.node(), 0, launch, 0);
  scope.graph()->AddEdge(b.node(), 0, launch, 1);
  scope.graph()->AddEdge(c.node(), 0, launch, 2);
  scope.graph()->AddEdge(d.node(), 0, launch, 3);
  scope.graph()->AddEdge(u.node(), 0, launch, 4);
  scope.graph()->AddEdge(v.node(), 0, launch, 5);
  scope.graph()->AddEdge(w.node(), 0, launch, 6);

  auto out0 =

   * @throws IllegalArgumentException if the introduction of the edge would violate {@link
   *     #allowsParallelEdges()} or {@link #allowsSelfLoops()}
   */
  @CanIgnoreReturnValue
  boolean addEdge(N nodeU, N nodeV, E edge);

  /**
   * Adds {@code edge} connecting {@code endpoints}. In an undirected network, {@code edge} will
   * also connect {@code nodeV} to {@code nodeU}.
   *

   * @throws IllegalArgumentException if the introduction of the edge would violate {@link
   *     #allowsParallelEdges()} or {@link #allowsSelfLoops()}
   */
  @CanIgnoreReturnValue
  boolean addEdge(N nodeU, N nodeV, E edge);

  /**
   * Adds {@code edge} connecting {@code endpoints}. In an undirected network, {@code edge} will
   * also connect {@code nodeV} to {@code nodeU}.
   *

	// recording the graph, its out-edges.
	var edges []stackCheckEdge
	maxHeight := 0
	ctxt := sc.ctxt
	// addEdge adds a stack growth out of this function to
	// function "target" or, if target == 0, a local stack growth
	// within the function.
	addEdge := func(growth int, target loader.Sym) {
		if graph {
			edges = append(edges, stackCheckEdge{growth, target})
		}
		height := growth

      if (edge->src_output() == Graph::kControlSlot) {
        g->AddControlEdge(edge->src(), send_from_host_node);
      } else {
        g->AddEdge(edge->src(), edge->src_output(), send_from_host_node, index);
      }
    }
    g->RemoveNode(n);
  }
  g->AddEdge(key_placeholder, 0, send_from_host_node,
             send_from_host_dtypes->size());
  return send_from_host_node;
}