>>>
class Foo {
  static ExportElementImpl exportFor(LibraryElement exportedLibrary,
      [List<NamespaceCombinator> combinators = NamespaceCombinator
          .EMPTY_LIST]) {
    ExportElementImpl spec = new ExportElementImpl(-1);
    spec.exportedLibrary = exportedLibrary;
    spec.combinators = combinators;
    return spec;
  }
}
<<<
class Foo {
  static ExportElementImpl exportFor(
    LibraryElement exportedLibrary, [
    List<NamespaceCombinator> combinators = NamespaceCombinator.EMPTY_LIST,
  ]) {
    ExportElementImpl spec = new ExportElementImpl(-1);
    spec.exportedLibrary = exportedLibrary;
    spec.combinators = combinators;
    return spec;
  }
}