/// <inheritdoc />
        public Task <DeployedApplicationHealth> GetDeployedApplicationHealthUsingPolicyAsync(
            NodeName nodeName,
            string applicationId,
            int?eventsHealthStateFilter = 0,
            int?deployedServicePackagesHealthStateFilter    = 0,
            ApplicationHealthPolicy applicationHealthPolicy = default(ApplicationHealthPolicy),
            bool?excludeHealthStatistics        = false,
            long?serverTimeout                  = 60,
            CancellationToken cancellationToken = default(CancellationToken))
        {
            nodeName.ThrowIfNull(nameof(nodeName));
            applicationId.ThrowIfNull(nameof(applicationId));
            serverTimeout?.ThrowIfOutOfInclusiveRange("serverTimeout", 1, 4294967295);
            var requestId = Guid.NewGuid().ToString();
            var url       = "Nodes/{nodeName}/$/GetApplications/{applicationId}/$/GetHealth";

            url = url.Replace("{nodeName}", Uri.EscapeDataString(nodeName.ToString()));
            url = url.Replace("{applicationId}", applicationId);
            var queryParams = new List <string>();

            // Append to queryParams if not null.
            eventsHealthStateFilter?.AddToQueryParameters(queryParams, $"EventsHealthStateFilter={eventsHealthStateFilter}");
            deployedServicePackagesHealthStateFilter?.AddToQueryParameters(queryParams, $"DeployedServicePackagesHealthStateFilter={deployedServicePackagesHealthStateFilter}");
            excludeHealthStatistics?.AddToQueryParameters(queryParams, $"ExcludeHealthStatistics={excludeHealthStatistics}");
            serverTimeout?.AddToQueryParameters(queryParams, $"timeout={serverTimeout}");
            queryParams.Add("api-version=6.0");
            url += "?" + string.Join("&", queryParams);

            string content;

            using (var sw = new StringWriter())
            {
                if (applicationHealthPolicy != default(ApplicationHealthPolicy))
                {
                    ApplicationHealthPolicyConverter.Serialize(new JsonTextWriter(sw), applicationHealthPolicy);
                }

                content = sw.ToString();
            }

            HttpRequestMessage RequestFunc()
            {
                var request = new HttpRequestMessage()
                {
                    Method  = HttpMethod.Post,
                    Content = new StringContent(content, Encoding.UTF8),
                };

                request.Content.Headers.ContentType = System.Net.Http.Headers.MediaTypeHeaderValue.Parse("application/json; charset=utf-8");
                return(request);
            }

            return(this.httpClient.SendAsyncGetResponse(RequestFunc, url, DeployedApplicationHealthConverter.Deserialize, requestId, cancellationToken));
        }
        /// <inheritdoc />
        public Task <ReplicaHealth> GetReplicaHealthUsingPolicyAsync(
            PartitionId partitionId,
            ReplicaId replicaId,
            int?eventsHealthStateFilter = 0,
            ApplicationHealthPolicy applicationHealthPolicy = default(ApplicationHealthPolicy),
            long?serverTimeout = 60,
            CancellationToken cancellationToken = default(CancellationToken))
        {
            partitionId.ThrowIfNull(nameof(partitionId));
            replicaId.ThrowIfNull(nameof(replicaId));
            serverTimeout?.ThrowIfOutOfInclusiveRange("serverTimeout", 1, 4294967295);
            var requestId = Guid.NewGuid().ToString();
            var url       = "Partitions/{partitionId}/$/GetReplicas/{replicaId}/$/GetHealth";

            url = url.Replace("{partitionId}", partitionId.ToString());
            url = url.Replace("{replicaId}", replicaId.ToString());
            var queryParams = new List <string>();

            // Append to queryParams if not null.
            eventsHealthStateFilter?.AddToQueryParameters(queryParams, $"EventsHealthStateFilter={eventsHealthStateFilter}");
            serverTimeout?.AddToQueryParameters(queryParams, $"timeout={serverTimeout}");
            queryParams.Add("api-version=6.0");
            url += "?" + string.Join("&", queryParams);

            string content;

            using (var sw = new StringWriter())
            {
                ApplicationHealthPolicyConverter.Serialize(new JsonTextWriter(sw), applicationHealthPolicy);
                content = sw.ToString();
            }

            HttpRequestMessage RequestFunc()
            {
                var request = new HttpRequestMessage()
                {
                    Method  = HttpMethod.Post,
                    Content = new StringContent(content, Encoding.UTF8),
                };

                request.Content.Headers.ContentType = System.Net.Http.Headers.MediaTypeHeaderValue.Parse("application/json; charset=utf-8");
                return(request);
            }

            return(this.httpClient.SendAsyncGetResponse(RequestFunc, url, ReplicaHealthConverter.Deserialize, requestId, cancellationToken));
        }