[1] Payment Method Manifest (4/25/2017, 3:49:32 PM) <https://w3c.github.io/payment-method-manifest/#processing-model>
[2] Payment Method Manifest (12/8/2017, 4:11:29 AM) <https://www.w3.org/TR/2017/WD-payment-method-manifest-20171212/>
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