public async Task <List <string> > GraduateMembers(List <Member> membersToGraduate)
        {
            var messages = new List <string>();

            foreach (var member in membersToGraduate)
            {
                await _userRoleManager.AddUserToRoleAsync(member.UserId, Constants.ALUMNI_ROLE_NAME);

                await _graduationCommunicationsService.SendGraduationCommunications(member);

                messages.Add($"{member.UserFullName()} has successfully graduated to Alumni status.");
            }
            return(messages);
        }