/// <summary>
            /// 批量添加策略
            /// </summary>
            /// <param name="code">角色唯一标志</param>
            /// <param name="policies">策略 ID 列表</param>
            /// <param name="cancellationToken"></param>
            /// <returns></returns>
            public async Task <CommonMessage> AddPolicies(
                string code,
                IEnumerable <string> policies,
                CancellationToken cancellationToken = default)
            {
                var param = new AddPolicyAssignmentsParam(policies, PolicyAssignmentTargetType.ROLE)
                {
                    TargetIdentifiers = new string[] { code },
                };

                var res = await client.Request <AddPolicyAssignmentsResponse>(param.CreateRequest(), cancellationToken);

                return(res.Result);
            }
            /// <summary>
            /// 添加策略
            /// </summary>
            /// <param name="userId">用户 ID</param>
            /// <param name="policies">策略列表</param>
            /// <param name="cancellationToken"></param>
            /// <returns></returns>
            public async Task <CommonMessage> AddPolicies(
                string userId,
                IEnumerable <string> policies,
                CancellationToken cancellationToken = default)
            {
                var param = new AddPolicyAssignmentsParam()
                {
                    TargetType        = PolicyAssignmentTargetType.USER,
                    TargetIdentifiers = new string[] { userId },
                    Policies          = policies,
                };
                await client.GetAccessToken();

                var res = await client.Request <AddPolicyAssignmentsResponse>(param.CreateRequest(), cancellationToken);

                return(res.Result);
            }
            /// <summary>
            /// 添加策略授权
            /// </summary>
            /// <param name="policies">策略 code 列表</param>
            /// <param name="targetType"></param>
            /// <param name="targetIdentifiers">可选值为 USER (用户) 和 ROLE (角色)</param>
            /// <param name="cancellationToken">用户 id 列表和角色 code 列表</param>
            /// <returns></returns>
            public async Task <CommonMessage> AddAssignments(
                IEnumerable <string> policies,
                PolicyAssignmentTargetType targetType,
                IEnumerable <string> targetIdentifiers,
                CancellationToken cancellationToken = default)
            {
                var param = new AddPolicyAssignmentsParam(policies, targetType)
                {
                    TargetIdentifiers = targetIdentifiers,
                };

                await client.GetAccessToken();

                var res = await client.Request <AddPolicyAssignmentsResponse>(param.CreateRequest(), cancellationToken);

                return(res.Result);
            }