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kotlinlang

Annotations that set a default function for overload ambiguity
```
@AmbiguityDefault
operator fun Foo.plusAssign(other: Foo)
```

How do you invoke the non-default function?

Probably by just calling the function nominally instead of using the operator.

In that case it should use the one that is annotated by AmbiguityDefault though

the ambiguity occurs in cases like `plus` and `set` vs `plusAssign`

those are different operators, so you can always directly call them.

one concern might be how best to set the `plus` and `set` behavior as the default operators over the `plusAssign`