/// <summary>
/// Gets the expected test end time
/// </summary>
/// <param name="duration">Test duration</param>
/// <param name="testId">Test Id</param>
/// <returns>Invokes setEstimatedEndTime method in client side</returns>
public async Task <Task> GetExpectedEndTime(double duration, int testId)
{
var expectedTimeString = await _testConductRepository.GetExpectedTestEndTime(duration, testId);
return(Clients.Group(ADMIN_GROUP).InvokeAsync("setEstimatedEndTime", expectedTimeString));
}