pragma solidity ^0.4.18; import "../crowdsale/RefundableCrowdsale.sol"; contract RefundableCrowdsaleImpl is RefundableCrowdsale { function RefundableCrowdsaleImpl ( uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _goal ) public Crowdsale(_startTime, _endTime, _rate, _wallet) RefundableCrowdsale(_goal) { } }