docs: @Override
      public void pushCompositeComponentClient(final TemplateClient client)
      {
          TemplateContext itc = new TemplateContextImpl();
          itc.setCompositeComponentClient(
                  new CompositeComponentTemplateManager(this._facelet, client, getPageContext()));
          _isolatedTemplateContext.add(itc);
          _currentTemplateContext++;
          _defaultVarMapper.setTemplateContext(itc);
      }