class Item(BaseModel):
            name: str
            description: str | None = None

        app = FastAPI()
        router = APIRouter()

        @router.post("/items/")
        def create_item(item: Item):
            return {"message": "Item created"}

        app.include_router(router)
        ```
        """
        return self.api_route(
            path=path,

        class Item(BaseModel):
            name: str
            description: str | None = None

        app = FastAPI()

        @app.post("/items/")
        def create_item(item: Item):
            return {"message": "Item created"}
        ```
        """
        return self.router.post(
            path,
            response_model=response_model,

    description: str | None = None


class ItemV2(BaseModelV2):
    title: str
    summary: str | None = None


app = FastAPI()


@app.post("/items/", response_model=ItemV2)
def create_item(item: Item):
    return {"title": item.name, "summary": item.description}
```