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44constructor (string memory _name, string memory _symbol, ERC721Wrapper _wrapper, uint256 _tokenId, address _from, uint256 _sharesCount, uint8 _decimals, uint256 _sharePrice, IERC20 _paymentToken, bool _remnant) ERC20(_name, _symbol) public
45{
46    wrapper = _wrapper;
47    tokenId = _tokenId;
48    sharesCount = _sharesCount;
49    sharePrice = _sharePrice;
50    paymentToken = _paymentToken;
51    remnant = _remnant;
52    released = false;
53    _setupDecimals(_decimals);
54    _mint(_from, _sharesCount);
55    emit Securitize(_from, address(wrapper.target()), tokenId, address(this));
56}

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85function redeem() public payable
86{
87    require(!released);
88    address payable _from = msg.sender;
89    uint256 _paymentAmount = msg.value;
90    uint256 _sharesCount = balanceOf(_from);
91    uint256 _redeemAmount = redeemAmountOf(_from);
92    if (paymentToken == IERC20(0)) {
93        require(_paymentAmount >= _redeemAmount);
94        uint256 _changeAmount = _paymentAmount - _redeemAmount;
95        if (_changeAmount > 0) _from.transfer(_changeAmount);
96    } else {
97        if (_paymentAmount > 0) _from.transfer(_paymentAmount);
98        if (_redeemAmount > 0) paymentToken.safeTransferFrom(_from, address(this), _redeemAmount);
99    }
100    released = true;
101    if (_sharesCount > 0) _burn(_from, _sharesCount);
102    wrapper._remove(_from, tokenId, remnant);
103    try wrapper.target().approve(address(this), tokenId) {
104    } catch (bytes memory /* _data */) {
105    }
106    wrapper.target().transferFrom(address(this), _from, tokenId);
107    _cleanup();
108    emit Redeem(_from, address(wrapper.target()), tokenId, address(this));
109}