docs: static Continuation<SanitizedContent> strictContinuation(
        WriteContinuation delegate,
        final StringBuilder buffer,
        final ContentKind kind) {
      if (delegate.result().isDone()) {
        return new ResultContinuation<>(
            UnsafeSanitizedContentOrdainer.ordainAsSafe(buffer.toString(), kind));
      }
      return new AbstractContinuation<SanitizedContent>(delegate) {
        @Override
        Continuation<SanitizedContent> nextContinuation(WriteContinuation next) {
          return strictContinuation(next, buffer, kind);
        }
      };
    }