public function onLoadDataContainer($tableName)
    {
        static $tableExists;
        // Test that the tables have been created.
        if (null === $tableExists) {
            $tableExists = \System::getContainer()
                ->get('database_connection')
                ->getSchemaManager()
                ->tablesExist(['tl_metamodel']);
        }
        if (false === $tableExists) {
            return;
        }

        $this->handleMetaModelTable($tableName);
        $this->handleNonMetaModelTable($tableName);
    }