pragma solidity ^0.4.24; import "../token/ERC20/IERC20.sol"; import "../crowdsale/emission/AllowanceCrowdsale.sol"; contract AllowanceCrowdsaleImpl is AllowanceCrowdsale { constructor ( uint256 rate, address wallet, IERC20 token, address tokenWallet ) public { Crowdsale.initialize(rate, wallet, token); AllowanceCrowdsale.initialize(tokenWallet); } }