@Override
  public boolean isEquivalentTo(final PsiElement another) {
    if (!(another instanceof XmlElementDecl)) return false;
    PsiElement element1 = this;
    PsiElement element2 = another;
    if (!element1.isPhysical()) element1 = element1.getOriginalElement();
    if (!element2.isPhysical()) element2 = element2.getOriginalElement();

    return element1 == element2;
  }
@Override
  public boolean isEquivalentTo(final PsiElement another)