{
    "Function": "tweak",
    "File": "contracts/Cauldron.sol",
    "Parent Contracts": [
        "contracts/utils/access/AccessControl.sol"
    ],
    "High-Level Calls": [],
    "Internal Calls": [
        "require(bool,string)",
        "_tweak",
        "require(bool,string)",
        "auth"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function tweak(bytes12 vaultId, bytes6 seriesId, bytes6 ilkId)\n        external\n        auth\n        returns(DataTypes.Vault memory vault)\n    {\n        DataTypes.Balances memory balances_ = balances[vaultId];\n        vault = vaults[vaultId];\n        if (seriesId != vault.seriesId) {\n            require (balances_.art == 0, \"Only with no debt\");\n            vault.seriesId = seriesId;\n        }\n        if (ilkId != vault.ilkId) {\n            require (balances_.ink == 0, \"Only with no collateral\");\n            vault.ilkId = ilkId;\n        }\n        _tweak(vaultId, vault);\n    }"
}