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I have a configuration file in which I want to replace `&lt;BUCKET&gt;` with a `bucket.id`.
`userScript.replace('&lt;BUCKET_NAME&gt;', bucket.id)`  causes the error `"Expected type 'str', got 'Output[str]' instead"` , which makes perfect sense.
Could someone please tell me how I can tell Pulumi to execute this replacement only after the bucket resource has been created? (similar to what I usually `pulumi.Output.concat()`).

I'll answer my own question for now. The answer is here: <https://www.pulumi.com/docs/intro/concepts/programming-model/#apply>

```userScript_built = userScript.replace('&lt;BUCKET_NAME&gt;', bucket.id)```
becomes something like:
```userScript_built = bucket.id.apply(lambda id: userScript.replace('&lt;BUCKET_NAME&gt;', id))```