```\n        address burnToken = address(ISoftVault(strategy.vault).uToken());\n        if (collSize > 0) {\n            if (posCollToken != address(wrapper))\n                revert Errors.INCORRECT_COLTOKEN(posCollToken);\n            bank.takeCollateral(collSize);\n            wrapper.burn(burnToken, collSize);\n            _doRefund(burnToken);\n        }\n```\n