Recursively loads all Fusion files from the configured path (By default that's Resources/Private/TypoScripts
of the current package) and then checks whether a Fusion object for current controller and action can be found.
If the controller class name is Foo\Bar\Baz\Controller\BlahController and the action is "index",
it checks for the Fusion path Foo.Bar.Baz.BlahController.index.
If this path is found, then it is used for rendering. Otherwise, the $fallbackView is used.