source/Core/Routing/Module/ClassProviderStorage.php
private function toLowercase($modulesControllers)
    {
        $result = [];

        if (!is_null($modulesControllers)) {
            foreach ($modulesControllers as $moduleId => $controllers) {
                $result[strtolower($moduleId)] = $this->controllerKeysToLowercase($controllers);
            }
        }

        return $result;
    }
private function toLowercase($modulesControllers)
    {
        $result = [];

        if (!is_null($modulesControllers)) {
            foreach ($modulesControllers as $moduleId => $controllers) {
                $result[strtolower($moduleId)] = $this->controllerKeysToLowercase($controllers);
            }
        }

        return $result;
    }
private function toLowercase ( $ modulesControllers ) { $ result = [ ] ; if ( ! is_null ( $ modulesControllers ) ) { foreach ( $ modulesControllers as $ moduleId => $ controllers ) { $ result [ strtolower ( $ moduleId ) ] = $ this -> controllerKeysToLowercase ( $ controllers ) ; } } return $ result ; }
Change the module IDs and the controller keys to lower case.

@param array $modulesControllers The controller arrays of several modules.

@return array The given controller arrays of several modules, with the module IDs and the controller keys in lower case.
Change the module IDs and the controller keys to lower case .