diagnostics static method
Implementation
static String diagnostics() =>
"hasToken=${ULocalStorage.hasToken()} accessExpiresAt=${accessTokenExpiresAt()} accessExpired=${isAccessTokenExpired()} "
"hasRefreshToken=$hasRefreshToken refreshExpiresAt=${ULocalStorage.getRefreshTokenExpiresAt()} refreshExpired=$isRefreshTokenExpired "
"canRefresh=$canRefresh epoch=$_epoch sessionEnded=$_authFailureHandled now=${DateTime.now().toUtc()}";