setCodeChallenge static method
Set your own code challenge or use the utility method generateRandomCodeVerifier to generate
one for you and set it via codeChallenge
to this method
Set it before calling getAuthorizationCode
Implementation
static setCodeChallenge(String codeChallenge) async =>
await _methodChannel.invokeMethod('setCodeChallenge', {"codeChallenge": codeChallenge});