public ServiceFuture<VpnGatewayInner> getByResourceGroupAsync(String resourceGroupName, String gatewayName, final ServiceCallback<VpnGatewayInner> serviceCallback) {
        return ServiceFuture.fromResponse(getByResourceGroupWithServiceResponseAsync(resourceGroupName, gatewayName), serviceCallback);
    }
public ServiceFuture < VpnGatewayInner > getByResourceGroupAsync ( String resourceGroupName , String gatewayName , final ServiceCallback < VpnGatewayInner > serviceCallback ) { return ServiceFuture . fromResponse ( getByResourceGroupWithServiceResponseAsync ( resourceGroupName , gatewayName ) , serviceCallback ) ; }
Retrieves the details of a virtual wan vpn gateway.

@param resourceGroupName The resource group name of the VpnGateway.
@param gatewayName The name of the gateway.
@param serviceCallback the async ServiceCallback to handle successful and failed responses.
@throws IllegalArgumentException thrown if parameters fail the validation
@return the {@link ServiceFuture} object