public string GetUsers()
        {
            List <LdapEntry> ldapUsers = DtypUtility.GetUsers(domainName, adminName, adminPassword);
            List <User>      users     = new List <User>();

            foreach (LdapEntry userEntry in ldapUsers)
            {
                string userName      = userEntry.GetAttribute("name").StringValue;
                byte[] userSidBinary = userEntry.GetAttribute("objectSid").ByteValue;
                _SID   userSid       = TypeMarshal.ToStruct <_SID>(userSidBinary);
                User   user          = new User();
                user.Name = userName;
                user.Sid  = userSid;
                users.Add(user);
            }

            return(JsonSerializer.Serialize(users, serializerOptions));
        }