@Internal
  public static Object evaluateNoResolve(@Nullable GrExpression expression) {
    GrExpression operand = skipParenthesesDownOrNull(expression);
    if (operand instanceof GrLiteral) {
      return ((GrLiteral)operand).getValue();
    }
    return null;
  }
@Internal
  public static Object evaluateNoResolve(@Nullable GrExpression expression)