code: function MUTATE_PROP_x_SUBPROP(state, payload) {
        if (!isArray(payload)) payload = [payload];
        var newValue = payload.pop();
        var ids = getIdsFromPayload(payload, conf, PROP_SUBPROP);
        if (!checkIdWildcardRatio(ids, PROP_SUBPROP, conf)) return;
        var pathWithIds = fillinPathWildcards(ids, PROP_SUBPROP, state, conf);
        return setDeepValue(state, pathWithIds, newValue);
      }
docs: eslint-disable-next-line