<virtualType name="BraintreeApplePayConfigValueHandler"
             type="Magento\Payment\Gateway\Config\ConfigValueHandler">
    <arguments>
        <argument name="configInterface" xsi:type="object">
            BraintreeApplePayConfig
        </argument>
    </arguments>
</virtualType>

This is a virtual type configuration.

This configuration is for the base area. Base area configurations will apply to all the sub-applications.

This virtualType configuration tells the Object Manager when a user wants a virtual BraintreeApplePayConfigValueHandler object that it should return a Magento\Payment\Gateway\Config\ConfigValueHandler object.

This configuration tells the Object Manager that when a user wants a BraintreeApplePayConfigValueHandler object that the following arguments should be used in the foo object's constructor.

• $configInterface = new BraintreeApplePayConfig (...)

<virtualType name="BraintreeApplePayConfig"
             type="Magento\Payment\Gateway\Config\Config">
    <arguments>
        <argument name="methodCode" xsi:type="const">
            PayPal\Braintree\Model\ApplePay\Ui\ConfigProvider::METHOD_CODE
        </argument>
    </arguments>
</virtualType>

This is a virtual type configuration.

This configuration is for the base area. Base area configurations will apply to all the sub-applications.

This virtualType configuration tells the Object Manager when a user wants a virtual BraintreeApplePayConfig object that it should return a Magento\Payment\Gateway\Config\Config object.

This configuration tells the Object Manager that when a user wants a BraintreeApplePayConfig object that the following arguments should be used in the foo object's constructor.

• $methodCode = PayPal\Braintree\Model\ApplePay\Ui\ConfigProvider::METHOD_CODE;