[Feature] Support `Condition` attribute on `Choose` element

The only child element that doesn't support `Condition` attribute is `Choose`. Is it on purpose? I find myself, on some occasions, **needing** to add a conditional attribute to the `Choose` element itself.

If I don't have that option, the code kind of becomes error prone and cumbersome.

For Example:

```xml

```

is better, less repetitive and less error prone than the following...

```xml

```

_See for context_