如何在创建'VirtualNetwork‘对象后知道的pulumi中使用异步子网id？

import * as pulumi from "@pulumi/pulumi";
import * as azure from "@pulumi/azure-native";

async function createVirtualNetwork() {
    const resourceGroup = new azure.resources.ResourceGroup("resourceGroup");

    const virtualNetwork = new azure.network.VirtualNetwork("virtualNetwork", {
        resourceGroupName: resourceGroup.name,
        virtualNetworkName: "myVirtualNetwork",
        addressSpace: {
            addressPrefixes: ["10.0.0.0/16"],
        },
    });

    const subnet = new azure.network.Subnet("subnet", {
        resourceGroupName: resourceGroup.name,
        virtualNetworkName: virtualNetwork.name,
        subnetName: "mySubnet",
        addressPrefix: "10.0.0.0/24",
    });

    // 异步获取子网ID
    const subnetId = await subnet.id;

    return subnetId;
}

createVirtualNetwork().then(subnetId => {
    console.log(`Subnet ID: ${subnetId}`);
});