* @return object the newly created instance of the specified class
     * @throws NotInstantiableException If resolved to an abstract class or an interface (since 2.0.9)
     */
    protected function build($class, $params, $config)
    {
        /* @var $reflection ReflectionClass */
        list($reflection, $dependencies) = $this->getDependencies($class);
 
        $addDependencies = [];
        if (isset($config['__construct()'])) {
            $addDependencies = $config['__construct()'];
            unset($config['__construct()']);
        }

            $class = $class->id;
        }
        if (isset($this->_singletons[$class])) {
            // singleton
            return $this->_singletons[$class];
        } elseif (!isset($this->_definitions[$class])) {
            return $this->build($class, $params, $config);
        }
 
        $definition = $this->_definitions[$class];
 
        if (is_callable($definition, true)) {
            $params = $this->resolveDependencies($this->mergeParams($class, $params));

     * @throws InvalidConfigException if the configuration is invalid.
     * @see \yii\di\Container
     */
    public static function createObject($type, array $params = [])
    {
        if (is_string($type)) {
            return static::$container->get($type, $params);
        }
 
        if (is_callable($type, true)) {
            return static::$container->invoke($type, $params);
        }
 

        if (isset($this->_modules[$id])) {
            if ($this->_modules[$id] instanceof self) {
                return $this->_modules[$id];
            } elseif ($load) {
                Yii::debug("Loading module: $id", __METHOD__);
                /* @var $module Module */
                $module = Yii::createObject($this->_modules[$id], [$id, $this]);
                $module::setInstance($module);
                return $this->_modules[$id] = $module;
            }
        }
 
        return null;

                    continue;
                }
            } elseif (is_string($mixed)) {
                if ($this->has($mixed)) {
                    $component = $this->get($mixed);
                } elseif ($this->hasModule($mixed)) {
                    $component = $this->getModule($mixed);
                } elseif (strpos($mixed, '\\') === false) {
                    throw new InvalidConfigException("Unknown bootstrapping component ID: $mixed");
                }
            }
 
            if (!isset($component)) {

    /**
     * {@inheritdoc}
     */
    public function init()
    {
        $this->state = self::STATE_INIT;
        $this->bootstrap();
    }
 
    /**
     * Initializes extensions and executes bootstrap components.
     * This method is called by [[init()]] after the application has been fully configured.
     * If you override this method, make sure you also call the parent implementation.

     */
    public function __construct($config = [])
    {
        if (!empty($config)) {
            Yii::configure($this, $config);
        }
        $this->init();
    }
 
    /**
     * Initializes the object.
     * This method is invoked at the end of the constructor after the object is initialized with the
     * given configuration.

        $this->state = self::STATE_BEGIN;
 
        $this->preInit($config);
 
        $this->registerErrorHandler($config);
 
        Component::__construct($config);
    }
 
    /**
     * Pre-initializes the application.
     * This method is called at the beginning of the application constructor.
     * It initializes several important application properties.

 
        $config = $this->resolveDependencies($config);
 
        if (!empty($dependencies) && $reflection->implementsInterface('yii\base\Configurable')) {
            // set $config as the last parameter (existing one will be overwritten)
            $dependencies[count($dependencies) - 1] = $config;
            return $reflection->newInstanceArgs($dependencies);
        }
 
        $object = $reflection->newInstanceArgs($dependencies);
        foreach ($config as $name => $value) {
            $object->$name = $value;
        }

            $class = $class->id;
        }
        if (isset($this->_singletons[$class])) {
            // singleton
            return $this->_singletons[$class];
        } elseif (!isset($this->_definitions[$class])) {
            return $this->build($class, $params, $config);
        }
 
        $definition = $this->_definitions[$class];
 
        if (is_callable($definition, true)) {
            $params = $this->resolveDependencies($this->mergeParams($class, $params));

            return static::$container->get($class, $params, $type);
        }
 
        if (isset($type['class'])) {
            $class = $type['class'];
            unset($type['class']);
            return static::$container->get($class, $params, $type);
        }
 
        throw new InvalidConfigException('Object configuration must be an array containing a "class" or "__class" element.');
    }
 
    private static $_logger;