function liquidationFactor(address _asset)
    public
    view
    override
    returns (float memory)
{
    AssetClass class = assetClass(_asset);
    if (class == AssetClass.Sigma) { // } else if (class == AssetClass.Sigma) {
        return float({numerator: 40, denominator: 100});
    }
}

function maxCollateralFactor(address _asset)
    public
    view
    override
    returns (float memory)
{
    AssetClass class = assetClass(_asset);
    if (class == AssetClass.Sigma) {
        return float({numerator: 45, denominator: 100});
    }
}
