fbb.Finish();
  custom_option_buffer.assign(fbb.GetBuffer().begin(), fbb.GetBuffer().end());
  return success();
}

// Convert func annotated with `tfl_fusable_op` attribute to tfl custom op.
LogicalResult ConvertTflFusableOp(
    func::FuncOp func, StringRef custom_op_name,
    ArrayRef<std::pair<StringRef, Attribute>> attrs) {
  func.eraseBody();
  func.addEntryBlock();

  OpBuilder builder(func.getBody());