When to use Payment method facade

by PMB   Last Updated September 13, 2017 14:09 PM

I am working custom payment method in magento 2. I refered magento documentation http://devdocs.magento.com/guides/v2.1/payments-integrations/base-integration/payment-option-config.html where they mentioned use Payment method facade.

But I reviewed core model module-authorizenet where thay have not used Payment method facade they used "Magento\Authorizenet\Model\Directpost" instead of Payment method facade. I am bit confused with when to use Payment method facade.

So when to use Payment method facade ?

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