Nested scalar type collections

[SanderSander]

I know that it's possible to typehint nested collections as described here: https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/nesting#content-collections-of-data-objects

But it would be nice if this would also work with scalar collections:

For example int[]

class MyDataObject extends Data
{
    public function __construct(
        /** @var int[] */
        public array $scalarCollection
    ) {}
}

This should improve validation

[
    "scalarCollection" => 'required|array',
    "scalarCollection.*" => 'required|integer"
]

This would also be nice if the values are the correct scalar type, so that all the items in the array are truly integers instead of string.
This would nice if we post a list with integers from a for example a select box in a form.