// "Use 'orElseGet' method with functional argument" "true-preview"

import java.util.Optional;

class Test {
  String createDefaultString(int x) {
    return "foo"+x;
  }

  public void test(Optional<String> opt) {
    int x = 5;
    String result = opt.orElseGet(() -> createDefaultString(x));
  }
}