public GrouperWebServicesClient(GrouperWebServicesCredentials credentials, string clientVersion = "v2_1_000")
        {
            this.grouperService                 = new GrouperService_v2_0();
            this.grouperService.Credentials     = credentials;
            this.grouperService.Url             = credentials.Url;
            this.grouperService.Timeout         = credentials.Timeout;
            this.grouperService.PreAuthenticate = credentials.PreAuthenticate;

            this.clientVersion = clientVersion;
        }
        public GrouperWebServicesClient(GrouperWebServicesCredentials credentials, string clientVersion = "v2_1_000")
        {
            this.grouperService = new GrouperService_v2_0();
            this.grouperService.Credentials = credentials;
            this.grouperService.Url = credentials.Url;
            this.grouperService.Timeout = credentials.Timeout;
            this.grouperService.PreAuthenticate = credentials.PreAuthenticate;

            this.clientVersion = clientVersion;
        }