* @code
* $modules['foo'] = 'ApiFoo';
* $modules['bar'] = [
- * 'class' => 'ApiBar',
+ * 'class' => ApiBar::class,
* 'factory' => function( $main, $name ) { ... }
* ];
* $modules['xyzzy'] = [
- * 'class' => 'ApiXyzzy',
- * 'factory' => [ 'XyzzyFactory', 'newApiModule' ]
+ * 'class' => ApiXyzzy::class,
+ * 'factory' => [ XyzzyFactory::class, 'newApiModule' ]
* ];
* @endcode
*