public Assign RetrieveAsssignment(Assign assign)
        {
            try
            {
                IAssignment asgn      = (IAssignment)GetService(typeof(IAssignment).Name);
                Assign      getAssign = asgn.GetAssignment(assign);
                assign = getAssign;
            }
            catch (ImplementationNotFoundException)
            {
                throw new Exception("Submission failed. Try again.");
            }

            return(assign);
        }