"ikke", "der", "var", "mig", "sig", "men", "et", "har", "om", "vi", "min", "havde", "ham", "hun", "nu", "over", "da", "fra", "du", "ud", "sin", "dem", "os", "op", "man", "hans", "hvor", "eller", "hvad", "skal", "selv", "her", "alle", "vil", "blev", "kunne", "ind", "når", "være", "dog", "noget", "ville", "jo", "deres", "efter", "ned", "skulle", "denne", "end", "dette", "mit", "også", "under", "have", "dig", "anden", "hende", "mine", "alt", "meget", "sit", "sine", "vor", "mod", "disse", "hvis", "din",...

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Voorbeeld upgrade

Pas nu het bestand `main.py` aan om de body van een `PUT` request te ontvangen.

Dankzij Pydantic kunnen we de body declareren met standaard Python types.

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()

errors.not_found_on_file_system = Niet gevonden. Oorzaak: {0}
errors.could_not_open_on_system = Kan {0} niet openen.<br>Controleer of het bestand is gekoppeld aan een toepassing.
errors.result_size_exceeded = Er kunnen geen verdere resultaten worden weergegeven.
errors.target_file_does_not_exist = Bestand {0} bestaat niet.
errors.failed_to_delete_file = Kan bestand {0} niet verwijderen.

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