class OutEdgeMatcher : public ::testing::MatcherInterface<OutEdge> {
 public:
  OutEdgeMatcher(::testing::Matcher<const Node*> src_matcher, int src_oidx)
      : src_matcher_(std::move(src_matcher)), src_oidx_(src_oidx) {}

  bool MatchAndExplain(
      OutEdge out_edge,
      ::testing::MatchResultListener* listener) const override {

}

// Matches the `idx`'th output of a node that matches `node`.
::testing::Matcher<impl::OutEdge> Out(int oidx,
                                      ::testing::Matcher<const Node*> node);

// Matches the first output of a node that matches `node`.
inline ::testing::Matcher<impl::OutEdge> Out(
    ::testing::Matcher<const Node*> node) {
  return Out(0, node);
}

		delete(parent.Out, cur)

		// Reconfigure every edge from the current node to now begin at the parent.
		for _, outEdge := range cur.Out {
			child := outEdge.Dest

			delete(child.In, cur)
			child.In[parent] = outEdge
			parent.Out[child] = outEdge

			outEdge.Src = parent
			outEdge.Residual = true
			// If the edge from the parent to the current node and the edge from the

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package ssa

// critical splits critical edges (those that go from a block with
// more than one outedge to a block with more than one inedge).
// Regalloc wants a critical-edge-free CFG so it can implement phi values.
func critical(f *Func) {
	// maps from phi arg ID to the new block created for that argument

        }

        orderedNodeConnectionsBuilder.add(new NodeConnection.Pred<>(predecessor));
        predecessorCount++;
      } else { // incidentEdge is an outEdge
        checkArgument(incidentEdge.nodeU().equals(thisNode));

        N successor = incidentEdge.nodeV();
        V value = successorNodeToValueFn.apply(successor);

        }

        orderedNodeConnectionsBuilder.add(new NodeConnection.Pred<>(predecessor));
        predecessorCount++;
      } else { // incidentEdge is an outEdge
        checkArgument(incidentEdge.nodeU().equals(thisNode));

        N successor = incidentEdge.nodeV();
        V value = successorNodeToValueFn.apply(successor);

			ft.unsat = true
			if b.Func.pass.debug > 2 {
				b.Func.Warnl(b.Pos, "block=%s outedge=%d %s=%d unsat", b, idx, c, val)
			}
		} else {
			ft.limits[c.ID] = limit{val, val, uint64(val), uint64(val)}
			if b.Func.pass.debug > 2 {
				b.Func.Warnl(b.Pos, "block=%s outedge=%d %s=%d", b, idx, c, val)
			}
		}
	default:
		panic("unknown branch")
	}

    assume().that(graphIsMutable()).isTrue();

    putEdge(N1, N2);
    putEdge(N1, N3);
    putEdge(N1, N4);
    assertThat(graphAsMutableGraph.removeEdge(N1, N3)).isTrue();
    assertThat(graph.adjacentNodes(N1)).containsExactly(N2, N4);
  }

  @Test
  public void removeEdge_nodeNotPresent() {
    assume().that(graphIsMutable()).isTrue();

    putEdge(N1, N2);

    return backingValueGraph.addNode(node);
  }

  @Override
  public boolean putEdge(N nodeU, N nodeV) {
    return backingValueGraph.putEdgeValue(nodeU, nodeV, Presence.EDGE_EXISTS) == null;
  }

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

  @Override
  public boolean removeNode(N node) {

   *
   * <pre>{@code
   * static final ImmutableGraph<Country> COUNTRY_ADJACENCY_GRAPH =
   *     GraphBuilder.undirected()
   *         .<Country>immutable()
   *         .putEdge(FRANCE, GERMANY)
   *         .putEdge(FRANCE, BELGIUM)
   *         .putEdge(GERMANY, BELGIUM)
   *         .addNode(ICELAND)
   *         .build();
   * }</pre>
   *