def formfield(self, **kwargs):
        """
        Returns the formfield for the array.
        """
        defaults = {
            'form_class': ArrayFormField,
            'model_container': self.model_container,
            'model_form_class': self.model_form_class,
            'name': self.attname,
            'mdl_form_kw_l': self.model_form_kwargs_l

        }
        defaults.update(kwargs)
        return super().formfield(**defaults)
Returns the formfield for the array.