static void SetupAadCredentials(string vc)
{
// If you need to use Cosmos TEST clusters such as https://cosmostaurus.osdinfra.net/, please have a look at AadDogFoodHelper.cs.
string MY_DOCUMENTS = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location); //Save token in app path
//string MY_DOCUMENTS = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments);
string TOKEN_CACHE_PATH = System.IO.Path.Combine(MY_DOCUMENTS, "my.tokencache");
var tokenCache = GetTokenCache(TOKEN_CACHE_PATH);
var cred = AadCredentialHelper.GetCredentialFromPrompt(tokenCache);
//VC.SetupAadCredentials(null, null, cred);
//VC.SetupAadCredentials("https://cosmos15.osdinfra.net/cosmos/dsa.email.segmentation", null, cred);
VC.SetupAadCredentials(vc, null, cred);
}