HttpEngine should use RequiresExtension

[yschimke]

HttpEngine should use RequiresExtension

[marcbaechinger]

Thanks for raising this!

I think we should do what makes the least hassle for our users. So if AS complains, we probably should do this.

For my education: with @RequiresApi I know how I as a developer can code and take different API levels into account. Like

if (Util.SDK_INT >= 21) {
  // here
}

How would that work with such a @RequiresExtension annotation? Do you know?

[yschimke]

SdkExtensions.getExtensionVersion(Build.VERSION_CODES.S) >= 7

It should clear IDE errors when you check this.