How can I integrate my payment gateway provider with Shopify?

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I have a payment gateway provider which offers 4 different payment methods. I want to support my clients to integrate their Shopify ecommerce websites with my payment gateway. I want to appear my payment gateway provider in the default payment gateway provider so that my clients can integrate easily with one click. Otherwise, how can I do and what should I do? Do I need to contact with Shopify team and collaborate officially to appear my payment gateway as one of the default payment gateways in the payment providers list of Shopify admin's payments. Please suggest me how to do?