code: @Override
      public void accept(ClientlibVisitor visitor, ClientlibVisitor.VisitorMode mode, ClientlibResourceFolder parent) {
          visitor.visit(this, ClientlibVisitor.VisitorMode.DEPENDS, parent);
      }
docs: Calls the visitor with mode {@link com.composum.sling.clientlibs.handle.ClientlibVisitor.VisitorMode#DEPENDS},
  since external references are never embedded.