docs: private static void appendListOrSetHelper(
        IndentedLinesBuilder ilb, String creationFunctionSnippet, Collection<String> itemSnippets) {
      if (itemSnippets.isEmpty()) {
        ilb.appendLineStart(creationFunctionSnippet, "()");
  
      } else {
        ilb.appendLine(creationFunctionSnippet, "(");
        boolean isFirst = true;
        for (String item : itemSnippets) {
          if (isFirst) {
            isFirst = false;
          } else {
            ilb.appendLineEnd(",");
          }
          ilb.appendLineStart("    ", item);
        }
        ilb.append(")");
      }
    }