In this case you will have to ensure that each operation ID is **unique** in some other way.

For example, you could make sure that each *path operation* has a tag, and then generate the operation ID based on the **tag** and the *path operation* **name** (the function name).

### Custom Generate Unique ID Function

But we want to be smarter and simplify the code a bit.

We know all the *path operations* in this module have the same:

* Path `prefix`: `/items`.
* `tags`: (just one tag: `items`).
* Extra `responses`.
* `dependencies`: they all need that `X-Token` dependency we created.

So, instead of adding all that to each *path operation*, we can add it to the `APIRouter`.

    # Using Any for Specification Extensions
    callbacks: Optional[Dict[str, Union[Dict[str, PathItem], Reference, Any]]] = None
    pathItems: Optional[Dict[str, Union[PathItem, Reference]]] = None


class Tag(BaseModelWithConfig):
    name: str
    description: Optional[str] = None
    externalDocs: Optional[ExternalDocumentation] = None


class OpenAPI(BaseModelWithConfig):
    openapi: str
    info: Info

## 0.87.0

Highlights of this release:

* [Upgraded Starlette](https://github.com/encode/starlette/releases/tag/0.21.0)
    * Now the `TestClient` is based on HTTPX instead of Requests. 🚀