*   `tf.cond` emits a StatelessIf op if the branch functions are stateless and
    do not touch any resources.
*   `tf.cond`, `tf.while` and `if` and `while` in AutoGraph now accept a
    nonscalar predicate if has a single element. This does not affect non-V2
    control flow.
*   `tf.while_loop` emits a StatelessWhile op if the cond and body functions are

subgroup, like // in Ed25519. In fact, it is lost to history why RFC 8032 adopted the // irrelevant RFC 7748 clamping, but it is now required for compatibility. func (s *Scalar) SetBytesWithClamping(x []byte) (*Scalar, error) { // The description above omits the purpose of the high bits of the clamping // for brevity, but those are also lost to reductions, and are also // irrelevant to edwards25519 as they protect against a specific // implementation bug that was once observed in a generic Montgomery ladder....

):
    return {"message": "Hello World"}
```

...all these parameters are required because the default value is `...` (Ellipsis).

But now it's possible and supported to just omit the default value, as would be done with Pydantic fields, and the parameters would still be required.

✨ For example, this is now supported:

```Python
from fastapi import Cookie, FastAPI, Header, Path, Query