}

// 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);
}