private static int getIndexOfArgument(PsiExpressionList argumentList,
                                          PsiElement argument) {
      final PsiExpression[] expressions =
        argumentList.getExpressions();
      int index = -1;
      for (PsiExpression expression : expressions) {
        index++;
        if (expression.equals(argument)) {
          break;
        }
      }
      return index;
    }
private static int getIndexOfArgument(PsiExpressionList argumentList,
                                          PsiElement argument)