{
    "Function": "requestRedeem",
    "File": "src/InvestmentManager.sol",
    "Parent Contracts": [
        "src/util/Auth.sol"
    ],
    "High-Level Calls": [
        "LiquidityPoolLike",
        "LiquidityPoolLike",
        "LiquidityPoolLike",
        "LiquidityPoolLike",
        "LiquidityPoolLike",
        "LiquidityPoolLike",
        "LiquidityPoolLike",
        "PoolManagerLike",
        "PoolManagerLike",
        "GatewayLike",
        "PoolManagerLike",
        "LiquidityPoolLike",
        "GatewayLike",
        "LiquidityPoolLike",
        "LiquidityPoolLike",
        "LiquidityPoolLike",
        "LiquidityPoolLike"
    ],
    "Internal Calls": [
        "auth",
        "_isAllowedToInvest",
        "_toUint128"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function requestRedeem(uint256 trancheTokenAmount, address user) public auth {\n        address liquidityPool = msg.sender;\n        LiquidityPoolLike lPool = LiquidityPoolLike(liquidityPool);\n        uint128 _trancheTokenAmount = _toUint128(trancheTokenAmount);\n\n        // Check if liquidity pool currency is supported by the Centrifuge pool\n        poolManager.isAllowedAsPoolCurrency(lPool.poolId(), lPool.asset());\n        // Check if user is allowed to hold the restricted tranche tokens\n\n        _isAllowedToInvest(lPool.poolId(), lPool.trancheId(), lPool.asset(), user);\n\n        if (_trancheTokenAmount == 0) {\n            // Case: outstanding redemption orders will be cancelled\n            gateway.cancelRedeemOrder(\n                lPool.poolId(), lPool.trancheId(), user, poolManager.currencyAddressToId(lPool.asset())\n            );\n            return;\n        }\n\n        lPool.transferFrom(user, address(escrow), _trancheTokenAmount);\n\n        gateway.increaseRedeemOrder(\n            lPool.poolId(), lPool.trancheId(), user, poolManager.currencyAddressToId(lPool.asset()), _trancheTokenAmount\n        );\n    }"
}