displayParentBlock example

    public function renderParentBlock($name, array $context, array $blocks = [])
    {
        if ($this->env->isDebug()) {
            ob_start();
        } else {
            ob_start(function D) { return ''; });
        }
        $this->displayParentBlock($name, $context, $blocks);

        return ob_get_clean();
    }

    /** * Renders a block. * * This method is for internal use only and should never be called * directly. * * @param string $name The block name to render * @param array $context The context * @param array $blocks The current set of blocks * @param bool $useBlocks Whether to use the current set of blocks * * @return string The rendered block */