This call is specifically to support the FVTerm Single-Signon Functionality but can also be published by alternative SSO implementations. The InventuSSO implementation can have hosts with multiple user ID accounts--this call will list all of those accounts from the credentials folder for a specific identity.
The identityBase is the user's authenticated identity, such as an email address or active directory account.
static public List<string> GetUserIDs(string hostName, string identityBase)
{
return Credentials.GetHostUserIDs(hostName, identityBase);
}