Magento 2-Override FinalPriceBox using Preference or Plugin class of Configurable Product module

Question

Anyone has idea how to make preference or plugin on Magento\ConfigurableProduct\Pricing\Render\FinalPriceBox class of Magento\ConfigurableProduct.

Basically, new function i wanted to add in the FinalPriceBox class and to use new function in final_price.phtml file.

I see code in the di.xml of module-configurableproduct module. But do not know how to use in new custom module?

<type name="Magento\ConfigurableProduct\Pricing\Price\FinalPrice">
        <arguments>
            <argument name="priceResolver" xsi:type="object">ConfigurableFinalPriceResolver</argument>
        </arguments>
    </type>

Answer 1

<type name="Magento\ConfigurableProduct\Pricing\Price\FinalPrice">
        <arguments>
            <argument name="priceResolver" xsi:type="object">ConfigurableFinalPriceResolver</argument>
        </arguments>
    </type>

Mean using di.xml magento is changing priceResolver parameter value of Magento\ConfigurableProduct\Pricing\Price\FinalPrice from PriceResolverInterface $priceResolver to ConfigurableFinalPriceResolver $priceResolve

So,You will use preference to add a method then you have to use below code at di.xml

<type name="{YournewRwriteClass}">
    <arguments>
        <argument name="priceResolver" xsi:type="object">ConfigurableFinalPriceResolver</argument>
    </arguments>
</type>