in auth-lib/src/main/java/com/spotify/sdk/android/auth/AuthorizationClient.java [415:427]
void cancel() {
if (!mAuthorizationPending) {
return;
}
mAuthorizationPending = false;
closeAuthorizationHandler(mCurrentHandler);
if (mAuthorizationClientListener != null) {
mAuthorizationClientListener.onClientCancelled();
mAuthorizationClientListener = null;
}
}