sclass HMultiCRUD extends HAbstractRenderable {
  Concepts cc = db_mainConcepts();
  L<Class<? extends Concept>> classes;
  
  *(Class<? extends Concept>... classes) {
    this.classes = asList(classes);
  }

  O renderPage(S uri, SS params) {
    LS parts = tok_splitAtSlash_nempties(uri);
    if (empty(parts))
      ret ul(map shortName(classes));
    
    ret "parts: " + sfu(parts);
  }
}