docs: @SuppressWarnings("deprecation")
      public boolean isInheritedContainer(CmsObject cms) throws CmsException {
  
          if (m_resource == null) {
              initResource(cms);
          }
          return OpenCms.getResourceManager().getResourceType(
              CmsResourceTypeXmlContainerPage.INHERIT_CONTAINER_TYPE_NAME).getTypeId() == m_resource.getTypeId();
      }