if (!sequencer->in_edges().empty()) {
    (*host_graph)->AddControlEdge(sequencer, (*host_graph)->sink_node());
  }
  PruneForReverseReachability(
      host_graph->get(),
      std::unordered_set<const Node*>{(*host_graph)->sink_node()});

  // Postprocess edges between different outside compilations.
  TF_RETURN_IF_ERROR(PostprocessEdgesBetweenOutsideCompilations(
      host_graph->get(), outside_compilation_attr_name));

  *input = {oper, 0};
  return true;
}

// Copies `src_graph` into `dst_graph`. Any node in `src_graph` with input
// `src_inputs[i]` will have that input replaced with `dst_inputs[i]`.  `prefix`
// will be prepended to copied node names. `control_deps` are nodes in
// `dst_graph` that the copied `src_graph` nodes will have control dependencies