```\nFile: MetaStable2TokenVaultMixin.sol\nabstract contract MetaStable2TokenVaultMixin is TwoTokenPoolMixin {\n    constructor(NotionalProxy notional_, AuraVaultDeploymentParams memory params)\n        TwoTokenPoolMixin(notional_, params)\n    {\n        // The oracle is required for the vault to behave properly\n        (/* */, /* */, /* */, /* */, bool oracleEnabled) = \n            IMetaStablePool(address(BALANCER_POOL_TOKEN)).getOracleMiscData();\n        require(oracleEnabled);\n    }\n```\n