private static String getExceptionMessage(PsiNewExpression newExpression, CommentTracker tracker) {
      if (newExpression == null) {
        return null;
      }
      final PsiExpressionList argumentList = newExpression.getArgumentList();
      if (argumentList == null) {
        return null;
      }
      final PsiExpression[] arguments = argumentList.getExpressions();
      if (arguments.length < 1) {
        return null;
      }
      return tracker.text(arguments[0]);
    }
private static String getExceptionMessage(PsiNewExpression newExpression, CommentTracker tracker)