    function signAndClaimAndRedeem(
        bytes calldata signature,
        address[] calldata cTokens,
        uint256[] calldata amountsToClaim,
        uint256[] calldata amountsToRedeem,
        bytes32[][] calldata merkleProofs
    ) external override hasNotSigned nonReentrant {
        _sign(signature);
        _multiClaim(cTokens, amountsToClaim, merkleProofs);
        _multiRedeem(cTokens, amountsToRedeem);
    }
    function signAndClaim(
        bytes calldata signature,
        address[] calldata cTokens,
        uint256[] calldata amounts,
        bytes32[][] calldata merkleProofs
    ) external override nonReentrant {
        // both sign and claim/multiclaim will revert on invalid signatures/proofs
        _sign(signature);
        _multiClaim(cTokens, amounts, merkleProofs);
    }
