I tried using the callable-array PHPDoc type, e.g.:

/**
 * @param callable-array $callable
 */
public function foo(callable $callable): mixed
{
    return $callable();
}

But I get the following error:

Method HelloWorld::foo() has parameter $callable with no value type specified in iterable type array&callable.

I then tried adding more specific types:

/**
 * @param callable-array{class-string, string} $callable
 */
public function foo(callable $callable): mixed
{
    return $callable();
}

However, I now get this error:

PHPDoc tag @param has invalid value (callable-array{class-string, string} $callable): Unexpected token "{", expected variable

Playground link:
https://phpstan.org/r/3a564dea-a6dd-4680-8089-c0c8d81e05ab

What is the correct way to use this type?