public List <PSADObject> GetGroupMembers(ADObjectFilterOptions options)
        {
            List <PSADObject> members = new List <PSADObject>();
            PSADObject        group   = FilterGroups(options).FirstOrDefault();

            if (group != null)
            {
                GetObjectsResult result = new GetObjectsResult();

                if (options.Paging)
                {
                    if (string.IsNullOrEmpty(options.NextLink))
                    {
                        result = GraphClient.Group.GetGroupMembers(group.Id.ToString());
                    }
                    else
                    {
                        result = GraphClient.Group.GetGroupMembersNext(result.NextLink);
                    }

                    members.AddRange(result.AADObject.Select(u => u.ToPSADObject()));
                    options.NextLink = result.NextLink;
                }
                else
                {
                    result = GraphClient.Group.GetGroupMembers(group.Id.ToString());
                    members.AddRange(result.AADObject.Select(u => u.ToPSADObject()));

                    while (!string.IsNullOrEmpty(result.NextLink))
                    {
                        result = GraphClient.Group.GetGroupMembersNext(result.NextLink);
                        members.AddRange(result.AADObject.Select(u => u.ToPSADObject()));
                    }
                }
            }

            return(members);
        }
        /// <summary>
        /// Gets AD group membership by provided AD object Ids
        /// </summary>
        /// <param name='parameters'>
        /// Required. Objects filtering parameters.
        /// </param>
        /// <param name='cancellationToken'>
        /// Cancellation token.
        /// </param>
        /// <returns>
        /// Server response for Active Directory objects inquiry API calls
        /// </returns>
        public async Task <GetObjectsResult> GetObjectsByObjectIdsAsync(GetObjectsParameters parameters, CancellationToken cancellationToken)
        {
            // Validate
            if (parameters == null)
            {
                throw new ArgumentNullException("parameters");
            }

            // Tracing
            bool   shouldTrace  = TracingAdapter.IsEnabled;
            string invocationId = null;

            if (shouldTrace)
            {
                invocationId = TracingAdapter.NextInvocationId.ToString();
                Dictionary <string, object> tracingParameters = new Dictionary <string, object>();
                tracingParameters.Add("parameters", parameters);
                TracingAdapter.Enter(invocationId, this, "GetObjectsByObjectIdsAsync", tracingParameters);
            }

            // Construct URL
            string url = "";

            url = url + "/";
            url = url + Uri.EscapeDataString(this.Client.TenantID);
            url = url + "/getObjectsByObjectIds";
            List <string> queryParameters = new List <string>();

            queryParameters.Add("api-version=1.6-internal");
            if (queryParameters.Count > 0)
            {
                url = url + "?" + string.Join("&", queryParameters);
            }
            string baseUrl = this.Client.BaseUri.AbsoluteUri;

            // Trim '/' character from the end of baseUrl and beginning of url.
            if (baseUrl[baseUrl.Length - 1] == '/')
            {
                baseUrl = baseUrl.Substring(0, baseUrl.Length - 1);
            }
            if (url[0] == '/')
            {
                url = url.Substring(1);
            }
            url = baseUrl + "/" + url;
            url = url.Replace(" ", "%20");

            // Create HTTP transport objects
            HttpRequestMessage httpRequest = null;

            try
            {
                httpRequest            = new HttpRequestMessage();
                httpRequest.Method     = HttpMethod.Post;
                httpRequest.RequestUri = new Uri(url);

                // Set Headers

                // Set Credentials
                cancellationToken.ThrowIfCancellationRequested();
                await this.Client.Credentials.ProcessHttpRequestAsync(httpRequest, cancellationToken).ConfigureAwait(false);

                // Serialize Request
                string requestContent = null;
                JToken requestDoc     = null;

                JObject getObjectsParametersValue = new JObject();
                requestDoc = getObjectsParametersValue;

                if (parameters.Ids != null)
                {
                    if (parameters.Ids is ILazyCollection == false || ((ILazyCollection)parameters.Ids).IsInitialized)
                    {
                        JArray objectIdsArray = new JArray();
                        foreach (string objectIdsItem in parameters.Ids)
                        {
                            objectIdsArray.Add(objectIdsItem);
                        }
                        getObjectsParametersValue["objectIds"] = objectIdsArray;
                    }
                }

                if (parameters.Types != null)
                {
                    if (parameters.Types is ILazyCollection == false || ((ILazyCollection)parameters.Types).IsInitialized)
                    {
                        JArray typesArray = new JArray();
                        foreach (string typesItem in parameters.Types)
                        {
                            typesArray.Add(typesItem);
                        }
                        getObjectsParametersValue["types"] = typesArray;
                    }
                }

                getObjectsParametersValue["includeDirectoryObjectReferences"] = parameters.IncludeDirectoryObjectReferences;

                requestContent      = requestDoc.ToString(Newtonsoft.Json.Formatting.Indented);
                httpRequest.Content = new StringContent(requestContent, Encoding.UTF8);
                httpRequest.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json; charset=utf-8");

                // Send Request
                HttpResponseMessage httpResponse = null;
                try
                {
                    if (shouldTrace)
                    {
                        TracingAdapter.SendRequest(invocationId, httpRequest);
                    }
                    cancellationToken.ThrowIfCancellationRequested();
                    httpResponse = await this.Client.HttpClient.SendAsync(httpRequest, cancellationToken).ConfigureAwait(false);

                    if (shouldTrace)
                    {
                        TracingAdapter.ReceiveResponse(invocationId, httpResponse);
                    }
                    HttpStatusCode statusCode = httpResponse.StatusCode;
                    if (statusCode != HttpStatusCode.OK)
                    {
                        cancellationToken.ThrowIfCancellationRequested();
                        CloudException ex = CloudException.Create(httpRequest, requestContent, httpResponse, await httpResponse.Content.ReadAsStringAsync().ConfigureAwait(false));
                        if (shouldTrace)
                        {
                            TracingAdapter.Error(invocationId, ex);
                        }
                        throw ex;
                    }

                    // Create Result
                    GetObjectsResult result = null;
                    // Deserialize Response
                    if (statusCode == HttpStatusCode.OK)
                    {
                        cancellationToken.ThrowIfCancellationRequested();
                        string responseContent = await httpResponse.Content.ReadAsStringAsync().ConfigureAwait(false);

                        result = new GetObjectsResult();
                        JToken responseDoc = null;
                        if (string.IsNullOrEmpty(responseContent) == false)
                        {
                            responseDoc = JToken.Parse(responseContent);
                        }

                        if (responseDoc != null && responseDoc.Type != JTokenType.Null)
                        {
                            JToken valueArray = responseDoc["value"];
                            if (valueArray != null && valueArray.Type != JTokenType.Null)
                            {
                                foreach (JToken valueValue in ((JArray)valueArray))
                                {
                                    AADObject aADObjectInstance = new AADObject();
                                    result.AADObject.Add(aADObjectInstance);

                                    JToken objectIdValue = valueValue["objectId"];
                                    if (objectIdValue != null && objectIdValue.Type != JTokenType.Null)
                                    {
                                        string objectIdInstance = ((string)objectIdValue);
                                        aADObjectInstance.ObjectId = objectIdInstance;
                                    }

                                    JToken objectTypeValue = valueValue["objectType"];
                                    if (objectTypeValue != null && objectTypeValue.Type != JTokenType.Null)
                                    {
                                        string objectTypeInstance = ((string)objectTypeValue);
                                        aADObjectInstance.ObjectType = objectTypeInstance;
                                    }

                                    JToken displayNameValue = valueValue["displayName"];
                                    if (displayNameValue != null && displayNameValue.Type != JTokenType.Null)
                                    {
                                        string displayNameInstance = ((string)displayNameValue);
                                        aADObjectInstance.DisplayName = displayNameInstance;
                                    }

                                    JToken userPrincipalNameValue = valueValue["userPrincipalName"];
                                    if (userPrincipalNameValue != null && userPrincipalNameValue.Type != JTokenType.Null)
                                    {
                                        string userPrincipalNameInstance = ((string)userPrincipalNameValue);
                                        aADObjectInstance.UserPrincipalName = userPrincipalNameInstance;
                                    }

                                    JToken mailValue = valueValue["mail"];
                                    if (mailValue != null && mailValue.Type != JTokenType.Null)
                                    {
                                        string mailInstance = ((string)mailValue);
                                        aADObjectInstance.Mail = mailInstance;
                                    }

                                    JToken mailEnabledValue = valueValue["mailEnabled"];
                                    if (mailEnabledValue != null && mailEnabledValue.Type != JTokenType.Null)
                                    {
                                        bool mailEnabledInstance = ((bool)mailEnabledValue);
                                        aADObjectInstance.MailEnabled = mailEnabledInstance;
                                    }

                                    JToken securityEnabledValue = valueValue["securityEnabled"];
                                    if (securityEnabledValue != null && securityEnabledValue.Type != JTokenType.Null)
                                    {
                                        bool securityEnabledInstance = ((bool)securityEnabledValue);
                                        aADObjectInstance.SecurityEnabled = securityEnabledInstance;
                                    }

                                    JToken signInNameValue = valueValue["signInName"];
                                    if (signInNameValue != null && signInNameValue.Type != JTokenType.Null)
                                    {
                                        string signInNameInstance = ((string)signInNameValue);
                                        aADObjectInstance.SignInName = signInNameInstance;
                                    }

                                    JToken servicePrincipalNamesArray = valueValue["servicePrincipalNames"];
                                    if (servicePrincipalNamesArray != null && servicePrincipalNamesArray.Type != JTokenType.Null)
                                    {
                                        foreach (JToken servicePrincipalNamesValue in ((JArray)servicePrincipalNamesArray))
                                        {
                                            aADObjectInstance.ServicePrincipalNames.Add(((string)servicePrincipalNamesValue));
                                        }
                                    }

                                    JToken userTypeValue = valueValue["userType"];
                                    if (userTypeValue != null && userTypeValue.Type != JTokenType.Null)
                                    {
                                        string userTypeInstance = ((string)userTypeValue);
                                        aADObjectInstance.UserType = userTypeInstance;
                                    }
                                }
                            }

                            JToken odatanextLinkValue = responseDoc["odata.nextLink"];
                            if (odatanextLinkValue != null && odatanextLinkValue.Type != JTokenType.Null)
                            {
                                string odatanextLinkInstance = ((string)odatanextLinkValue);
                                result.NextLink = odatanextLinkInstance;
                            }
                        }
                    }
                    result.StatusCode = statusCode;
                    if (httpResponse.Headers.Contains("request-id"))
                    {
                        result.RequestId = httpResponse.Headers.GetValues("request-id").FirstOrDefault();
                    }

                    if (shouldTrace)
                    {
                        TracingAdapter.Exit(invocationId, result);
                    }
                    return(result);
                }
                finally
                {
                    if (httpResponse != null)
                    {
                        httpResponse.Dispose();
                    }
                }
            }
            finally
            {
                if (httpRequest != null)
                {
                    httpRequest.Dispose();
                }
            }
        }