function tryPairedPrice()
    ...
    returns (uint192 lowPaired, uint192 highPaired)
{
    return pairedAssetRegistry.toAsset(pairedToken).price();
}
    if (high < FIX_MAX) {
        savedLowPrice = low;
        savedHighPrice = high;
        lastSave = uint48(block.timestamp);
    } else {
        // must be unpriced
        // untested:
        //      validated in other plugins, cost to test here is high
        assert(low == 0);
    }
    if (low == 0 || _anyDepeggedInPool() || _anyDepeggedOutsidePool()) {
        markStatus(CollateralStatus.IFFY);
    }
     function _anyDepeggedOutsidePool() internal view virtual override returns (bool) {
        try this.tryPairedPrice() returns (uint192 low, uint192 high) {
            // {UoA/tok} = {UoA/tok} + {UoA/tok}
            uint192 mid = (low + high) / 2;

            // If the price is below the default-threshold price, default eventually
            // uint192(+/-) is the same as Fix.plus/minus
            if (mid < pairedTokenPegBottom || mid > pairedTokenPegTop) return true;
        }
    unchecked {
        uint192 mid = (high - low) / 2 + low;
    }
