@Override
    protected void applyFix(@NotNull Project project, @NotNull PsiElement startElement, @NotNull ModPsiUpdater updater) {
      Document document = startElement.getContainingFile().getFileDocument();
      String replacement = c == '\t' ? "\\t" : String.valueOf(c);
      document.replaceString(myRangeMarker.getStartOffset(), myRangeMarker.getEndOffset(), replacement);
    }
@Override
    protected void applyFix(@NotNull Project project, @NotNull PsiElement startElement, @NotNull ModPsiUpdater updater)