Liquidity ZAP Contract

function initUniswapZAP(
    address token, 
    address WETH, 
    address tokenWethPair
) 
    public

function zapETH() external payable returns (uint256 liquidity)

function zapTokens(uint amount) external returns (uint256 liquidity)

function unzap() external returns  (uint amountToken, uint amountETH)

function unzapToETH() external returns (uint amount)

function unzapToTokens() external returns (uint amount)

function getLPTokenPerEthUnit(uint ethAmt) public view  returns (uint liquidity)