```\n            function updateTransferWhitelist(address account, bool add) external  onlyMultiSigAdmin {\n                    require(account != address(this), "updateTransferWhitelist: \n                          Cannot remove xMoz from whitelist");\n                    if(add) _transferWhitelist.add(account);\n                 else _transferWhitelist.remove(account);\n            emit SetTransferWhitelist(account, add);\n            }\n```\n