I have a network stack that is creating a vpc and a bunch of public subnets:

[Output] public Output<string> VpcId { get; set; }
[Output] public Output<ImmutableArray<string>> PublicSubnetIds { get; set; }

and am trying to reference these from another stack. I can reference the stack and can get the VpcId back using:

var network = new StackReference(SeparateNetworkStackName);
var vpcId = network.GetOutput("VpcId").Apply(x => x.ToString());

However, I can't work out how to retrieve the array of public subnets. These would seems like a fairly common operation. Anyone know how to do it?