# SommelierStEthDepositTurboStEthStrategy ## Overview The SommelierStEthDepositTurboStEthStrategy contract is a specialized strategy that supplies an underlying token into a generic Sommelier Vault to earn yield. It handles conversions between ETH and stETH using Curve pools. ## Constants ```solidity address public constant stEth = STETH_MAINNET; // Ethereum mainnet's StETH Token ICurveLpPool public constant pool = ICurveLpPool(CURVE_ETH_STETH_POOL_MAINNET); // Curve ETH-stETH pool ``` ## State Variables No additional state variables beyond those inherited from BaseSommelierStrategy. ## Functions ### Constructor ```solidity constructor() initializer ``` Empty constructor marked as initializer. ### Initialization Functions ### initialize ```solidity function initialize( IMaxApyVault _vault, address[] calldata _keepers, bytes32 _strategyName, address _strategist, ICellar _cellar ) public override initializer ``` Initializes the strategy with required components. Parameters: * `_vault`: MaxApy vault address * `_keepers`: Array of keeper addresses * `_strategyName`: Name of the strategy * `_strategist`: Strategist address * `_cellar`: Sommelier Turbo-stETH cellar address ### Core Functions ### liquidateExact ```solidity function liquidateExact(uint256 amountNeeded) external override checkRoles(VAULT_ROLE) returns (uint256 loss) ``` Withdraws exactly amountNeeded to vault. Parameters: * `amountNeeded`: Amount to withdraw Returns: * `loss`: Amount of realized loss ### View Functions ### previewLiquidate ```solidity function previewLiquidate(uint256 requestedAmount) public view override returns (uint256 liquidatedAmount) ``` Simulates withdrawal including potential losses. Parameters: * `requestedAmount`: Amount requested to withdraw Returns: * `liquidatedAmount`: Expected output amount ### previewLiquidateExact ```solidity function previewLiquidateExact(uint256 liquidatedAmount) public view override returns (uint256 requestedAmount) ``` Calculates required input for exact output. Parameters: * `liquidatedAmount`: Desired output amount Returns: * `requestedAmount`: Required input amount ### maxLiquidate ```solidity function maxLiquidate() public view override returns (uint256) ``` Returns maximum withdrawable amount after losses. Returns: * Maximum withdrawable amount ### maxLiquidateExact ```solidity function maxLiquidateExact() public view override returns (uint256) ``` Returns maximum withdrawable amount before losses. Returns: * Maximum withdrawable amount before losses ### Internal Core Functions ### \_adjustPosition ```solidity function _adjustPosition(uint256, uint256 minOutputAfterInvestment) internal override ``` Adjusts strategy positions based on available capital. Parameters: * `minOutputAfterInvestment`: Minimum expected output ### \_invest ```solidity function _invest(uint256 amount, uint256 minOutputAfterInvestment) internal override returns (uint256 depositedAmount) ``` Invests assets into Cellar Vault through stETH conversion. Parameters: * `amount`: Amount to invest * `minOutputAfterInvestment`: Minimum expected shares Returns: * `depositedAmount`: Amount of tokens received ### \_divest ```solidity function _divest(uint256 shares) internal override returns (uint256 withdrawn) ``` Withdraws assets from Cellar Vault and converts back to ETH. Parameters: * `shares`: Amount of shares to withdraw Returns: * `withdrawn`: Amount of assets received ### Receive Function ```solidity receive() external payable ``` Allows contract to receive native ETH. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://devs.maxapy.io/maxapy-erc4626/strategies/ethereum-weth/sommelier/sommelierstethdepositturbostethstrategy.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.