public async Task<string> DeleteOneAssociation(CohortService cs, string associationId)
        {
            var result = await cs.DeleteStudentCohortAssociationById(associationId);

            return result.ToString();
        }
 /// <summary>
 /// Delete a StudentCohortAssociation object
 /// </summary>
 /// <param name="cs">service to use for this action</param>
 /// <param name="association">the StudentCohortAssociation to delete</param>
 /// <returns>result of this action</returns>
 public static async Task<ActionResponseResult> DeleteOneStudentCohortAssociation(CohortService cs, StudentCohortAssociation association)
 {
     var response = await cs.DeleteStudentCohortAssociationById(association.id);
     var student = (StudentDisplayObject)HttpContext.Current.Cache[association.studentId];
     return GlobalHelper.GetActionResponseResult(association.studentId, student != null ? student.name : "", response, HttpStatusCode.NoContent);
 }