Hide tab on product page on certain condition in magento 2.3.3

Question

I am trying to use ifconfig to hide a tab but it is not working properly below is my code please check

<?php
namespace Afg\Hidetab\Block;
class hidetab extends \Magento\Framework\View\Element\Html\Link {
    /**
     * @override
     * @see \Magento\Framework\View\Element\Html\Link::toHtml()
     * @return string
     */
    public function toHtml() {return true ? parent::toHtml() : '';}
}

=========

<referenceBlock name="product.info.details">
            <block  class="Magento\Catalog\Block\Product\View" name="hidetab" ifconfig='Afg_Hidetab/hidetab/enable' template="Afg_Hidetab::hidetab.phtml"  group="detailed_info" >
            <arguments>
                <argument translate="true" name="title" xsi:type="string">Lava Calculator</argument>
            </arguments>
            </block>
        </referenceBlock>