public static DirDiffElementImpl createEqual(DTree parent, @NotNull DiffElement source, @NotNull DiffElement target) {
    return new DirDiffElementImpl(parent, source, target, DiffType.EQUAL, source.getPresentableName(), null);
  }
public static DirDiffElementImpl createEqual(DTree parent, @NotNull DiffElement source, @NotNull DiffElement target)