pragma solidity ^0.4.21; import "../token/ERC20/ERC20.sol"; import "../crowdsale/validation/WhitelistedCrowdsale.sol"; contract WhitelistedCrowdsaleImpl is WhitelistedCrowdsale { function WhitelistedCrowdsaleImpl ( uint256 _rate, address _wallet, ERC20 _token ) public Crowdsale(_rate, _wallet, _token) { } }