Return all direct subsidiaries of this company AS OWNERSHIP OBJECTS.
        Excludes subsidiaries of subsidiaries.

def get_immediate_children_ownership(self):
        """
        Return all direct subsidiaries of this company AS OWNERSHIP OBJECTS.
        Excludes subsidiaries of subsidiaries.

        """
        ownership = Ownership.objects.filter(parent=self).select_related('child', 'child__country')
        return ownership