public async Task <Response <VpnSiteLinkConnection> > GetAsync(string resourceGroupName, string gatewayName, string connectionName, string linkConnectionName, CancellationToken cancellationToken = default)
        {
            if (resourceGroupName == null)
            {
                throw new ArgumentNullException(nameof(resourceGroupName));
            }
            if (gatewayName == null)
            {
                throw new ArgumentNullException(nameof(gatewayName));
            }
            if (connectionName == null)
            {
                throw new ArgumentNullException(nameof(connectionName));
            }
            if (linkConnectionName == null)
            {
                throw new ArgumentNullException(nameof(linkConnectionName));
            }

            using var message = CreateGetRequest(resourceGroupName, gatewayName, connectionName, linkConnectionName);
            await _pipeline.SendAsync(message, cancellationToken).ConfigureAwait(false);

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

                value = VpnSiteLinkConnection.DeserializeVpnSiteLinkConnection(document.RootElement);
                return(Response.FromValue(value, message.Response));
            }
        internal static VpnConnectionData DeserializeVpnConnectionData(JsonElement element)
        {
            Optional <string>              name              = default;
            Optional <string>              etag              = default;
            ResourceIdentifier             id                = default;
            Optional <SubResource>         remoteVpnSite     = default;
            Optional <int>                 routingWeight     = default;
            Optional <int>                 dpdTimeoutSeconds = default;
            Optional <VpnConnectionStatus> connectionStatus  = default;
            Optional <VirtualNetworkGatewayConnectionProtocol> vpnConnectionProtocolType = default;
            Optional <long>   ingressBytesTransferred = default;
            Optional <long>   egressBytesTransferred  = default;
            Optional <int>    connectionBandwidth     = default;
            Optional <string> sharedKey = default;
            Optional <bool>   enableBgp = default;
            Optional <bool>   usePolicyBasedTrafficSelectors                  = default;
            Optional <IList <IpsecPolicy> >           ipsecPolicies           = default;
            Optional <IList <TrafficSelectorPolicy> > trafficSelectorPolicies = default;
            Optional <bool> enableRateLimiting             = default;
            Optional <bool> enableInternetSecurity         = default;
            Optional <bool> useLocalAzureIpAddress         = default;
            Optional <ProvisioningState> provisioningState = default;
            Optional <IList <VpnSiteLinkConnection> > vpnLinkConnections   = default;
            Optional <RoutingConfiguration>           routingConfiguration = default;

            foreach (var property in element.EnumerateObject())
            {
                if (property.NameEquals("name"))
                {
                    name = property.Value.GetString();
                    continue;
                }
                if (property.NameEquals("etag"))
                {
                    etag = property.Value.GetString();
                    continue;
                }
                if (property.NameEquals("id"))
                {
                    id = property.Value.GetString();
                    continue;
                }
                if (property.NameEquals("properties"))
                {
                    if (property.Value.ValueKind == JsonValueKind.Null)
                    {
                        property.ThrowNonNullablePropertyIsNull();
                        continue;
                    }
                    foreach (var property0 in property.Value.EnumerateObject())
                    {
                        if (property0.NameEquals("remoteVpnSite"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            remoteVpnSite = SubResource.DeserializeSubResource(property0.Value);
                            continue;
                        }
                        if (property0.NameEquals("routingWeight"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            routingWeight = property0.Value.GetInt32();
                            continue;
                        }
                        if (property0.NameEquals("dpdTimeoutSeconds"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            dpdTimeoutSeconds = property0.Value.GetInt32();
                            continue;
                        }
                        if (property0.NameEquals("connectionStatus"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            connectionStatus = new VpnConnectionStatus(property0.Value.GetString());
                            continue;
                        }
                        if (property0.NameEquals("vpnConnectionProtocolType"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            vpnConnectionProtocolType = new VirtualNetworkGatewayConnectionProtocol(property0.Value.GetString());
                            continue;
                        }
                        if (property0.NameEquals("ingressBytesTransferred"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            ingressBytesTransferred = property0.Value.GetInt64();
                            continue;
                        }
                        if (property0.NameEquals("egressBytesTransferred"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            egressBytesTransferred = property0.Value.GetInt64();
                            continue;
                        }
                        if (property0.NameEquals("connectionBandwidth"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            connectionBandwidth = property0.Value.GetInt32();
                            continue;
                        }
                        if (property0.NameEquals("sharedKey"))
                        {
                            sharedKey = property0.Value.GetString();
                            continue;
                        }
                        if (property0.NameEquals("enableBgp"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            enableBgp = property0.Value.GetBoolean();
                            continue;
                        }
                        if (property0.NameEquals("usePolicyBasedTrafficSelectors"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            usePolicyBasedTrafficSelectors = property0.Value.GetBoolean();
                            continue;
                        }
                        if (property0.NameEquals("ipsecPolicies"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            List <IpsecPolicy> array = new List <IpsecPolicy>();
                            foreach (var item in property0.Value.EnumerateArray())
                            {
                                array.Add(IpsecPolicy.DeserializeIpsecPolicy(item));
                            }
                            ipsecPolicies = array;
                            continue;
                        }
                        if (property0.NameEquals("trafficSelectorPolicies"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            List <TrafficSelectorPolicy> array = new List <TrafficSelectorPolicy>();
                            foreach (var item in property0.Value.EnumerateArray())
                            {
                                array.Add(TrafficSelectorPolicy.DeserializeTrafficSelectorPolicy(item));
                            }
                            trafficSelectorPolicies = array;
                            continue;
                        }
                        if (property0.NameEquals("enableRateLimiting"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            enableRateLimiting = property0.Value.GetBoolean();
                            continue;
                        }
                        if (property0.NameEquals("enableInternetSecurity"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            enableInternetSecurity = property0.Value.GetBoolean();
                            continue;
                        }
                        if (property0.NameEquals("useLocalAzureIpAddress"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            useLocalAzureIpAddress = property0.Value.GetBoolean();
                            continue;
                        }
                        if (property0.NameEquals("provisioningState"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            provisioningState = new ProvisioningState(property0.Value.GetString());
                            continue;
                        }
                        if (property0.NameEquals("vpnLinkConnections"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            List <VpnSiteLinkConnection> array = new List <VpnSiteLinkConnection>();
                            foreach (var item in property0.Value.EnumerateArray())
                            {
                                array.Add(VpnSiteLinkConnection.DeserializeVpnSiteLinkConnection(item));
                            }
                            vpnLinkConnections = array;
                            continue;
                        }
                        if (property0.NameEquals("routingConfiguration"))
                        {
                            if (property0.Value.ValueKind == JsonValueKind.Null)
                            {
                                property0.ThrowNonNullablePropertyIsNull();
                                continue;
                            }
                            routingConfiguration = RoutingConfiguration.DeserializeRoutingConfiguration(property0.Value);
                            continue;
                        }
                    }
                    continue;
                }
            }
            return(new VpnConnectionData(id, name.Value, etag.Value, remoteVpnSite.Value, Optional.ToNullable(routingWeight), Optional.ToNullable(dpdTimeoutSeconds), Optional.ToNullable(connectionStatus), Optional.ToNullable(vpnConnectionProtocolType), Optional.ToNullable(ingressBytesTransferred), Optional.ToNullable(egressBytesTransferred), Optional.ToNullable(connectionBandwidth), sharedKey.Value, Optional.ToNullable(enableBgp), Optional.ToNullable(usePolicyBasedTrafficSelectors), Optional.ToList(ipsecPolicies), Optional.ToList(trafficSelectorPolicies), Optional.ToNullable(enableRateLimiting), Optional.ToNullable(enableInternetSecurity), Optional.ToNullable(useLocalAzureIpAddress), Optional.ToNullable(provisioningState), Optional.ToList(vpnLinkConnections), routingConfiguration.Value));
        }