// Populate the model control dependencies metadata entry.
  if (std::any_of(
          model_control_dependencies_.begin(),
          model_control_dependencies_.end(),
          [](const tflite::ControlEdges& edges) { return !edges.empty(); })) {
    metadata.push_back(
        BuildMetadata(tflite::kModelControlDependenciesMetadataKey,
                      tflite::SerializeModelControlDependencies(

  let constructor = "TFTPU::CreateTPUColocateSplitsPass()";
  let description = [{
    It is beneficial for performance to assign a `Split` op to the same device
    as its predecessor. This is because the weight of cut edges is always
    minimized when the `Split` is with its predecessor. This colocation
    constraint will be used by the placer graph optimization to assign a device
    to the op.