SM\StateMachine\StateMachine::__construct PHP Method

    public function __construct($object, array $config, EventDispatcherInterface $dispatcher = null, CallbackFactoryInterface $callbackFactory = null)
    {
        $this->object = $object;
        $this->dispatcher = $dispatcher;
        $this->callbackFactory = $callbackFactory ?: new CallbackFactory('SM\\Callback\\Callback');
        if (!isset($config['property_path'])) {
            $config['property_path'] = 'state';
        }
        $this->config = $config;
        // Test if the given object has the given state property path
        try {
            $this->getState();
        } catch (NoSuchPropertyException $e) {
            throw new SMException(sprintf('Cannot access to configured property path "%s" on object %s with graph "%s"', $config['property_path'], get_class($object), $config['graph']));
        }
    }