func: function liabilityFinalized(
          ILiability _liability,
          uint256 _gas
      )
          external
          onlyLighthouse
          gasPriceEstimate
          returns (bool)
      {
          address liability = address(_liability);
          totalGasConsumed         += _gas;
          gasConsumedOf[liability] += _gas;
          require(xrt.mint(tx.origin, wnFromGas(gasConsumedOf[liability])));
          return true;
      }