public async Task <Response <VpnSiteLink> > GetAsync(string resourceGroupName, string vpnSiteName, string vpnSiteLinkName, CancellationToken cancellationToken = default)
        {
            if (resourceGroupName == null)
            {
                throw new ArgumentNullException(nameof(resourceGroupName));
            }
            if (vpnSiteName == null)
            {
                throw new ArgumentNullException(nameof(vpnSiteName));
            }
            if (vpnSiteLinkName == null)
            {
                throw new ArgumentNullException(nameof(vpnSiteLinkName));
            }

            using var message = CreateGetRequest(resourceGroupName, vpnSiteName, vpnSiteLinkName);
            await _pipeline.SendAsync(message, cancellationToken).ConfigureAwait(false);

            switch (message.Response.Status)
            {
            case 200:
            {
                VpnSiteLink value = default;
                using var document = await JsonDocument.ParseAsync(message.Response.ContentStream, default, cancellationToken).ConfigureAwait(false);

                if (document.RootElement.ValueKind == JsonValueKind.Null)
                {
                    value = null;
                }
                else
                {
                    value = VpnSiteLink.DeserializeVpnSiteLink(document.RootElement);
                }
                return(Response.FromValue(value, message.Response));
            }
        internal static VpnSiteData DeserializeVpnSiteData(JsonElement element)
        {
            Optional <string> etag     = default;
            Optional <string> id       = default;
            Optional <string> name     = default;
            Optional <string> type     = default;
            Optional <string> location = default;
            Optional <IDictionary <string, string> > tags       = default;
            Optional <WritableSubResource>           virtualWan = default;
            Optional <DeviceProperties>  deviceProperties       = default;
            Optional <string>            ipAddress         = default;
            Optional <string>            siteKey           = default;
            Optional <AddressSpace>      addressSpace      = default;
            Optional <BgpSettings>       bgpProperties     = default;
            Optional <ProvisioningState> provisioningState = default;
            Optional <bool> isSecuritySite = default;
            Optional <IList <VpnSiteLink> > vpnSiteLinks = default;
            Optional <O365PolicyProperties> o365Policy   = default;

            foreach (var property in element.EnumerateObject())
            {
                if (property.NameEquals("etag"))
                {
                    etag = property.Value.GetString();
                    continue;
                }
                if (property.NameEquals("id"))
                {
                    id = property.Value.GetString();
                    continue;
                }
                if (property.NameEquals("name"))
                {
                    name = property.Value.GetString();
                    continue;
                }
                if (property.NameEquals("type"))
                {
                    type = property.Value.GetString();
                    continue;
                }
                if (property.NameEquals("location"))
                {
                    location = property.Value.GetString();
                    continue;
                }
                if (property.NameEquals("tags"))
                {
                    if (property.Value.ValueKind == JsonValueKind.Null)
                    {
                        property.ThrowNonNullablePropertyIsNull();
                        continue;
                    }
                    Dictionary <string, string> dictionary = new Dictionary <string, string>();
                    foreach (var property0 in property.Value.EnumerateObject())
                    {
                        dictionary.Add(property0.Name, property0.Value.GetString());
                    }
                    tags = dictionary;
                    continue;
                }
                if (property.NameEquals("properties"))
                {
                    if (property.Value.ValueKind == JsonValueKind.Null)
                    {
                        property.ThrowNonNullablePropertyIsNull();
                        continue;
                    }
                    foreach (var property0 in property.Value.EnumerateObject())
                    {
                        if (property0.NameEquals("virtualWan"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            virtualWan = JsonSerializer.Deserialize <WritableSubResource>(property0.Value.ToString());
                            continue;
                        }
                        if (property0.NameEquals("deviceProperties"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            deviceProperties = DeviceProperties.DeserializeDeviceProperties(property0.Value);
                            continue;
                        }
                        if (property0.NameEquals("ipAddress"))
                        {
                            ipAddress = property0.Value.GetString();
                            continue;
                        }
                        if (property0.NameEquals("siteKey"))
                        {
                            siteKey = property0.Value.GetString();
                            continue;
                        }
                        if (property0.NameEquals("addressSpace"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            addressSpace = AddressSpace.DeserializeAddressSpace(property0.Value);
                            continue;
                        }
                        if (property0.NameEquals("bgpProperties"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            bgpProperties = BgpSettings.DeserializeBgpSettings(property0.Value);
                            continue;
                        }
                        if (property0.NameEquals("provisioningState"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            provisioningState = new ProvisioningState(property0.Value.GetString());
                            continue;
                        }
                        if (property0.NameEquals("isSecuritySite"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            isSecuritySite = property0.Value.GetBoolean();
                            continue;
                        }
                        if (property0.NameEquals("vpnSiteLinks"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            List <VpnSiteLink> array = new List <VpnSiteLink>();
                            foreach (var item in property0.Value.EnumerateArray())
                            {
                                array.Add(VpnSiteLink.DeserializeVpnSiteLink(item));
                            }
                            vpnSiteLinks = array;
                            continue;
                        }
                        if (property0.NameEquals("o365Policy"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            o365Policy = O365PolicyProperties.DeserializeO365PolicyProperties(property0.Value);
                            continue;
                        }
                    }
                    continue;
                }
            }
            return(new VpnSiteData(id.Value, name.Value, type.Value, location.Value, Optional.ToDictionary(tags), etag.Value, virtualWan, deviceProperties.Value, ipAddress.Value, siteKey.Value, addressSpace.Value, bgpProperties.Value, Optional.ToNullable(provisioningState), Optional.ToNullable(isSecuritySite), Optional.ToList(vpnSiteLinks), o365Policy.Value));
        }