```

////

### `Union` in Python 3.10

In this example we pass `Union[PlaneItem, CarItem]` as the value of the argument `response_model`.

Because we are passing it as a **value to an argument** instead of putting it in a **type annotation**, we have to use `Union` even in Python 3.10.

If it was in a type annotation we could have used the vertical bar, as:

```Python
some_variable: PlaneItem | CarItem
```

testing/performance/                    @gradle/bt-support
testing/smoke-test/                     @gradle/bt-support
testing/soak/                           @gradle/bt-support

# Cross-cutting architecture checks and decisions
.github/CODEOWNERS                          @gradle/bt-architecture-council
architecture/                               @gradle/bt-architecture-council

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