A PHPDoc result type of the \Magento\Framework\View\TemplateEngineInterface::render() method is wrong

[dmitrii_fediuk]

https://github.com/magento/magento2/blob/c58d2d/lib/internal/Magento/Framework/View/TemplateEngineInterface.php#L13-L28

The @return string is wrong because the class \Magento\Framework\View\TemplateEngine\Xhtml class implements the \Magento\Framework\View\TemplateEngineInterface::render() method and returns an instance of the \Magento\Framework\View\TemplateEngine\Xhtml\ResultInterface (particularly, \Magento\Ui\TemplateEngine\Xhtml\Result), not a string:

https://github.com/magento/magento2/blob/c58d2d/lib/internal/Magento/Framework/View/TemplateEngine/Xhtml.php#L71-L89

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https://github.com/magento/magento2/issues/3252

[dmitrii_fediuk]

See also:

• The PHPDoc result type of the \Magento\Framework\View\Element\UiComponent\ContentType\Html::render() method is wrong
• The PHPDoc result type of the \Magento\Ui\Component\AbstractComponent::render() method is wrong