public function getContainer()
    {
        if (is_null(self::$container)) {
            self::$container = $this->checkContainer();
        }
        return self::$container;
    }
public function getContainer()
    {
        if (is_null(self::$container)) {
            self::$container = $this->checkContainer();
        }
        return self::$container;
    }
public function getContainer ( ) { if ( is_null ( self :: $ container ) ) { self :: $ container = $ this -> checkContainer ( ) ; } return self :: $ container ; }
Gets the application dependency injection container

@return ContainerInterface|Container
Gets the application dependency injection container