private void flushGroup(boolean unknownAfter) {
        int containerStart = container.getTextRange().getStartOffset();
        List<TextContent> components = new ArrayList<>(group.size());
        for (int i = 0; i < group.size(); i++) {
          PsiElement e = group.get(i);
          TextContent component = extractRange(fullContent.getValue(), e.getTextRange().shiftLeft(containerStart));
          if (markupIndices.contains(i)) {
            component = component.excludeRanges(List.of(new Exclusion(0, 0, ExclusionKind.markup)));
          }
          if (markupIndices.contains(i + 1)) {
            component = component.excludeRanges(List.of(new Exclusion(component.length(), component.length(), ExclusionKind.markup)));
          }
          components.add(component);
        }
        TextContent content = TextContent.join(components);
        if (content != null) {
          if (unknownBefore) content = content.markUnknown(TextRange.from(0, 0));
          if (unknownAfter) content = content.markUnknown(TextRange.from(content.length(), 0));
          content = HtmlUtilsKt.nbspToSpace(content.removeIndents(Set.of(' ', '\t')));
          if (content != null) {
            for (PsiElement e : group) {
              result.put(e, content);
            }
          }
        }
        group.clear();
      }
private void flushGroup(boolean unknownAfter)