kartik\grid\GridResizeColumnsAsset::init PHP Method

    public function init()
    {
        $this->depends = array_merge($this->depends, ['kartik\\grid\\GridViewAsset']);
        $this->setSourcePath(__DIR__ . '/assets');
        $this->setupAssets('js', ['js/jquery.resizableColumns']);
        $this->setupAssets('css', ['css/jquery.resizableColumns']);
        parent::init();
    }