function sendBountyTokens() public onlyOwner {
        if (
            address(privateSale) != address(0)
            && block.timestamp >= privateSale.startTime()
            && false == bountySent
        ) {
            uint256 tokenAmount =  15 * uint(10) ** 6 * uint(10) ** 18;
            uint256 mintedAmount = super.mint(bounty, tokenAmount);
            require(mintedAmount == tokenAmount);
            bountySent = true;
        }
    }