private async Task LoadUserGroupsAsync(AssignmentDetailsViewModel model, string assignmentId)
{
var userGroups = await _assignmentManager.GetUserGroupsAssignedToAssignmentAsync(assignmentId);
foreach (var ug in userGroups)
{
if (ug.UserGroupType == UserGroupType.ConnectionGroup)
{
model.ConnectionGroups.Add(ug);
}
}
}