AppNotFoundException example

public static function invalidAppFlowActionVariableException(
        string $appFlowActionId,
        string $param,
        string $message = '',
        int $code = 0
    ): InvalidAppFlowActionVariableException {
        return new InvalidAppFlowActionVariableException($appFlowActionId, $param, $message, $code);
    }

    public static function notFound(string $identifier): self
    {
        return new AppNotFoundException(
            Response::HTTP_NOT_FOUND,
            self::NOT_FOUND,
            'App with identifier "{{ identifier }}" not found',
            ['identifier' => $identifier]
        );
    }

    public static function alreadyInstalled(string $appName): self
    {
        return new AppAlreadyInstalledException(
            Response::HTTP_CONFLICT,