Checks the both, check_changeable and apply_changeable, against the owned model and it's instance set

def changeable(self, request):
        '''
        Checks the both, check_changeable and apply_changeable, against the owned model and it's instance set
        '''
        return self.apply_changeable(self.get_queryset(), request) if self.check_changeable(self.model, request) is not False else self.get_queryset().none()