Method createExtensionNamespaceMap

/**
 * Allows the application to load a custom or default identity.
 *
 * @return  void
 *
 * @since   4.0.0
 */
public function createExtensionNamespaceMap()
{
    JLoader::register('JNamespacePsr4Map', JPATH_LIBRARIES . '/namespacemap.php');
    $extensionPsr4Loader = new \JNamespacePsr4Map();
    $extensionPsr4Loader->load();
}