Sending a body with a `GET` request has an undefined behavior in the specifications, nevertheless, it is supported by FastAPI, only for very complex/extreme use cases.

As it is discouraged, the interactive docs with Swagger UI won't show the documentation for the body when using `GET`, and proxies in the middle might not support it.

///

## Import Pydantic's `BaseModel` { #import-pydantics-basemodel }

            describe the project, such as on the website. While this element can be specified as
            CDATA to enable the use of HTML tags within the description, it is discouraged to allow
            plain text representation. If you need to modify the index page of the generated website,
            you are able to specify your own instead of adjusting this text.</description>

If a PR doesn't explain what it does or why, ask for more information.

A PR should have a specific use case that it is solving.

* If the PR is for a feature, it should have docs.
    * Unless it's a feature we want to discourage, like support for a corner case that we don't want users to use.
* The docs should include a source example file, not write Python directly in Markdown.