onJAccessGetAuthorisedViewLevels custom event
Adding onJAccessGetAuthorisedViewLevels custom event
For the plugin to work a custom event must be added to the JAccess::getAuthorisedViewLevels method which can be found in libraries\src\Access\Access.php.
Add the following code just before the final return of the method:
// START HACK for plg_swa_viewlevels
require __DIR__ . '/../../../plugins/swa/viewlevels/eventsnippet.php';
// END HACK for plg_swa_viewlevels