public async Task <Submission[]> GetAssignmentSubmissions(string sectionId, string assignmentId)
        {
            var result = await educationServiceClient.GetAssignmentSubmissionsAsync(sectionId, assignmentId);

            foreach (var item in result)
            {
                if (null != item.SubmittedBy.User && !string.IsNullOrEmpty(item.SubmittedBy.User.Id))
                {
                    item.SubmittedBy.User.DisplayName = await GetUsername(item.SubmittedBy.User.Id);
                }
                if (!string.IsNullOrEmpty(item.SubmittedDateTime))
                {
                    item.SubmittedDateTime = Convert.ToDateTime(item.SubmittedDateTime).ToShortDateString();
                }
                else
                {
                    item.SubmittedDateTime = "";
                }
                item.Resources = (await educationServiceClient.GetSubmissionResourcesAsync(sectionId, assignmentId, item.Id)).ToList();
            }
            return(result);
        }