    function withdraw(uint amount) public {
        _updateRewardForAllTokens();

        uint tokenId = 0;
        if (amount == balanceOf[msg.sender]) {
            tokenId = tokenIds[msg.sender];
        }
        withdrawToken(amount, tokenId);
    }

    function withdrawToken(uint amount, uint tokenId) public lock {
        totalSupply -= amount;
        balanceOf[msg.sender] -= amount;
        _safeTransfer(stake, msg.sender, amount);
    function withdraw(uint amount) public {
-       _updateRewardForAllTokens();

        uint tokenId = 0;
        if (amount == balanceOf[msg.sender]) {
            tokenId = tokenIds[msg.sender];
        }
        withdrawToken(amount, tokenId);
    }

    function withdrawToken(uint amount, uint tokenId) public lock {
+    	_updateRewardForAllTokens();

        totalSupply -= amount;
        balanceOf[msg.sender] -= amount;
        _safeTransfer(stake, msg.sender, amount);
-    function withdrawToken(uint amount, uint tokenId) public lock {
+    function withdrawToken(uint amount, uint tokenId) private lock {

        totalSupply -= amount;
        balanceOf[msg.sender] -= amount;
        _safeTransfer(stake, msg.sender, amount);
