runtime/tests/vm/dart/regress_flutter89482_2_test.dart

// Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

void other([String something = "ok"]) {
  print(something);
}

void main(List<String> args) {
  Function x = other;
  if (x is void Function({List<String> somethingElse})) {
    x(somethingElse: args);
  } else {
    x();
  }
}