///<inheritdoc/>
protected override async Task <string> SafeCreateNewToken(string iotHub, int suggestedTimeToLive)
{
DateTime startTime = DateTime.UtcNow;
string audience = SasTokenBuilder.BuildAudience(iotHub, DeviceId, ModuleId);
string expiresOn = SasTokenBuilder.BuildExpiresOn(startTime, TimeSpan.FromSeconds(suggestedTimeToLive));
string data = string.Join("\n", new string[] { audience, expiresOn });
string signature = await _signatureProvider.SignAsync(ModuleId, _generationId, data).ConfigureAwait(false);
return(SasTokenBuilder.BuildSasToken(audience, signature, expiresOn));
}