You can make resources you create elements of the struct: https://github.com/pulumi/examples/blob/master/azure-go-webserver-component/webserver.go#L12-L18

Webserver for instance makes some aggregate outputs available via a public method: https://github.com/pulumi/examples/blob/master/azure-go-webserver-component/webserver.go#L110-L126

See the consumption here: https://github.com/pulumi/examples/blob/master/azure-go-webserver-component/main.go#L54-L66

You could do something similar, adding a helper method that returns the appropriate subnet IDs for your use case.

(they will be outputs)

it’s interesting that this example doesn’t show the

ctx.RegisterResourceOutputs

that the documentation emphasizes is important. This example you sent makes sense. But what then is the point of registering resource outputs besides telling pulumi that your component is completed?

The call to 

registerOutputs

 also tells Pulumi that the resource is done registering children and should be considered fully constructed, so—although it’s not enforced—the best practice is to call it in all components even if no outputs need to be registered.

@lemon-agent-27707 Thanks! This worked great. I learned a bit more on reflection too in the process. Especially thank you for getting to me so quickly.