Route Registry

use \Emma\Http\Mappings\PatchMapping;

    $routables = [
        IndexController::class,
        ...
        //example: Adding your function directly to the array.  

        #[PatchMapping('/update/summary/{id:[0-9]*}')]
        function middlewareQuickPatch(): void {
            $result = ['status' => true, 'data' => 'ABCD'];
            die(json_encode($result));
        },
    ];

    RouteRegistry::getInstance()->setRoutables($routables); //Register ALL

ADVANCED USERS
can have there arrays of functions and/or classes in different file and includes those file with array_merge()

$routables = array_merge(
        (array) include "directory_to_array_file/class_file.php",
        (array) include "directory_to_array_file/direct_method_file.php",
        (array) include "directory_to_array_file/functions_file.php",
    );

    RouteRegistry::getInstance()->setRoutables($routables);  //Register ALL

WHERE :

class_file.php:
=====================
    return [
        IndexController::class,
        ...
    ];

Other file will simply follow class_file example...