  function enterSystem(address _src, uint256 _safe) external handlerAllowed(_src) safeAllowed(_safe) {
    SAFEData memory _sData = _safeData[_safe];
@>  ISAFEEngine.SAFE memory _safeInfo = ISAFEEngine(safeEngine).safes(_sData.collateralType, _sData.safeHandler);
@>  int256 _deltaCollateral = _safeInfo.lockedCollateral.toInt();
@>  int256 _deltaDebt = _safeInfo.generatedDebt.toInt();
    ISAFEEngine(safeEngine).transferSAFECollateralAndDebt(
@>    _sData.collateralType, _src, _sData.safeHandler, _deltaCollateral, _deltaDebt
    );
    emit EnterSystem(msg.sender, _src, _safe);
  }
function enterSystem(address _src, uint256 _safe) external handlerAllowed(_src) safeAllowed(_safe) {
  SAFEData memory _sData = _safeData[_safe];
+ ISAFEEngine.SAFE memory _safeInfo = ISAFEEngine(safeEngine).safes(_sData.collateralType, _src);
- ISAFEEngine.SAFE memory _safeInfo = ISAFEEngine(safeEngine).safes(_sData.collateralType, _sData.safeHandler);
  int256 _deltaCollateral = _safeInfo.lockedCollateral.toInt();
  int256 _deltaDebt = _safeInfo.generatedDebt.toInt();
  ISAFEEngine(safeEngine).transferSAFECollateralAndDebt(
    _sData.collateralType, _src, _sData.safeHandler, _deltaCollateral, _deltaDebt
  );
  emit EnterSystem(msg.sender, _src, _safe);
}
