Call method from parent class with unknown arguments length

parent.php

<?php

class Demo extends ParentClass
{
    function demoParent(...$arguments)
    {
        // some overrided logic
         return (new \ReflectionClass(get_class($this)))
            ->getParentClass()
            ->getMethod(__METHOD__)
            ->invokeArgs($this, $arguments)
        ;
    }
}