Re: [PHP-DEV][RFC][DISCUSSION] Allow abstract function override

[Wes]

Not sure i get what you mean. With "abstract functions" I include also
those in interfaces.

I haven't tried 7.2 yet, but i think what I'm proposing is already
supported (+ kelunik's RFC):

```
interface A{
    function x(stdClass $foo);
}

interface B extends A{
    function x($foo): stdClass;
}
```

I want this supported by abstract functions in abstract classes too.