@Override
  public PsiExpressionList getCaseValues() {
    PsiCaseLabelElementList elementList = getCaseLabelElementList();
    if (elementList == null) return null;
    PsiExpression[] expressions = PsiTreeUtil.getChildrenOfType(elementList, PsiExpression.class);
    expressions = expressions != null ? expressions : PsiExpression.EMPTY_ARRAY;
    return new LightExpressionList(getManager(), getLanguage(), expressions, elementList, elementList.getTextRange());
  }
@Override
  public PsiExpressionList getCaseValues()