private static void KeystoneRemoveProjectPermissionFromGroup(IamClient iamClient)
        {
            var keystoneRemovePermissionFromGroupOnProjectRequest =
                new KeystoneRemoveProjectPermissionFromGroupRequest()
            {
                ProjectId = "",
                GroupId   = "",
                RoleId    = ""
            };

            try
            {
                var keystoneRemovePermissionFromGroupOnProjectResponse =
                    iamClient.KeystoneRemoveProjectPermissionFromGroup(
                        keystoneRemovePermissionFromGroupOnProjectRequest);
                Console.WriteLine(
                    JsonConvert.SerializeObject(keystoneRemovePermissionFromGroupOnProjectResponse.HttpStatusCode));
            }
            catch (RequestTimeoutException requestTimeoutException)
            {
                Console.WriteLine(requestTimeoutException.ErrorMessage);
            }
            catch (ServiceResponseException clientRequestException)
            {
                Console.WriteLine(clientRequestException.HttpStatusCode);
                Console.WriteLine(clientRequestException.ErrorCode);
                Console.WriteLine(clientRequestException.ErrorMsg);
            }
            catch (ConnectionException connectionException)
            {
                Console.WriteLine(connectionException.ErrorMessage);
            }
        }
        /// <summary>
        /// 移除用户组的项目服务权限
        /// </summary>
        public KeystoneRemoveProjectPermissionFromGroupResponse KeystoneRemoveProjectPermissionFromGroup(KeystoneRemoveProjectPermissionFromGroupRequest keystoneRemoveProjectPermissionFromGroupRequest)
        {
            Dictionary <string, string> urlParam = new Dictionary <string, string>();

            urlParam.Add("project_id", keystoneRemoveProjectPermissionFromGroupRequest.ProjectId.ToString());
            urlParam.Add("group_id", keystoneRemoveProjectPermissionFromGroupRequest.GroupId.ToString());
            urlParam.Add("role_id", keystoneRemoveProjectPermissionFromGroupRequest.RoleId.ToString());
            string      urlPath  = HttpUtils.AddUrlPath("/v3/projects/{project_id}/groups/{group_id}/roles/{role_id}", urlParam);
            SdkRequest  request  = HttpUtils.InitSdkRequest(urlPath, keystoneRemoveProjectPermissionFromGroupRequest);
            SdkResponse response = DoHttpRequest("DELETE", request);

            return(JsonUtils.DeSerializeNull <KeystoneRemoveProjectPermissionFromGroupResponse>(response));
        }