I have a code that contains somthing like

$f = exit(...);

I'd like the "exit behaviour" to be configurable by the caller, e.g they might want to use their framework's way of exit, or something like that.

PHPStan with bleeding edge config flags the line as "Call to internal function exit()."
https://phpstan.org/r/f97e058f-d722-4841-8838-11288978d12e

I've figured this is because the bleeding edge config sets internalTag: true and exit-as-a-function returns

	public function isInternal(): TrinaryLogic
	{
		return TrinaryLogic::createYes();
	}

here https://github.com/phpstan/phpstan-src/blob/53123fa4950d2dc08c89fb28d74a71ce4ecf00dd/src/Reflection/Php/ExitFunctionReflection.php#L101-L104
added in phpstan/phpstan-src#3350

I'm trying to understand why is exit marked as internal, any hints appreciated, thanks.