pragma solidity ^0.4.24; import "../token/ERC20/ERC20.sol"; import "../crowdsale/validation/WhitelistedCrowdsale.sol"; import "../crowdsale/Crowdsale.sol"; contract WhitelistedCrowdsaleImpl is Crowdsale, WhitelistedCrowdsale { constructor ( uint256 _rate, address _wallet, ERC20 _token ) Crowdsale(_rate, _wallet, _token) public { } }