code: @Override
    public void onDeleteSpec(URI deletedSpecURI, String deletedSpecVersion, Properties headers) {
      _log.info("Spec deletion detected: " + deletedSpecURI + "/" + deletedSpecVersion);
  
      if (topologyCatalog.isPresent()) {
        this.specCompiler.onDeleteSpec(deletedSpecURI, deletedSpecVersion, headers);
      }
    }
docs: {@inheritDoc}