// Converts the SavedModel to the SavedModel dialect. Creates an MLIR function
  // for each signature.
  absl::StatusOr<mlir::OwningOpRef<mlir::ModuleOp>> ConvertSignatures();
  Status ConvertSignature(const std::string& sig_def_key,
                          const SignatureDef& signature_def);

  struct AssetInfo {
    std::string tensor_name;
    mlir::tf_saved_model::AssetOp op;
  };