function getTokens(uint num, address tokenBuyerContract) public {
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
        tokenBuyerContract.call.value(0 wei)();
    }