Templating/Helper/LayoutHelper.php
public function parentBlockWidget(BlockView $view, array $variables = [])
    {
        return $this->renderer->searchAndRenderBlock($view, 'widget', $variables, true);
    }
public function parentBlockWidget(BlockView $view, array $variables = [])
    {
        return $this->renderer->searchAndRenderBlock($view, 'widget', $variables, true);
    }
public function parentBlockWidget ( BlockView $ view , array $ variables = [ ] ) { return $ this -> renderer -> searchAndRenderBlock ( $ view , 'widget' , $ variables , true ) ; }
Renders the parent block widget defined in other resources on all levels of block prefix hierarchy

@param BlockView $view
@param array $variables

@return string
Renders the parent block widget defined in other resources on all levels of block prefix hierarchy