public async Task <string> QuerySex()
{
NSError error;
string resultString = string.Empty;
await Task.Factory.StartNew(() => resultString = m_healthKitStore.GetBiologicalSex (out error).BiologicalSex.ToString());
HealthKitDataContext.ActiveHealthKitData.Sex = resultString;
Console.WriteLine(resultString);
return(resultString);
}