title: How can i test in-app payments when Google Play App Signing feature is enabled?
body: <p>I want to test in-app payments and I have Google Play App Signing (GPAS) enabled.</p>
  
  <p>To test payments, I need an apk signed with real key (signing key in terms of GPAS).</p>
  
  <p>But I do not have private key for signing certificate. It was generated by Google and stored in Google Play.</p>
  
  <p>How can I avoid necessity to upload apk to Google Play each time I want to test in-app payments?</p>
  
  <p>How can I download signing private key somewhere?</p>