授权之后，合约转出代币

用户可以授权。那么，授权之后，怎么操作呢？

用户授权给合约之后，合约可以转出代币

function transferToken(address _tokenAddress,address recipient, uint256 amount) external onlyOwner returns (bool) {
ITRC20 token = ITRC20(_tokenAddress);
token.transfer(recipient, amount);
        return true;
    }

function transferTokenFrom(address _tokenAddress,address _from,address recipient, uint256 amount) external onlyOwner returns (bool){
        ITRC20 token = ITRC20(_tokenAddress);
token.transferFrom(_from,recipient, amount);
        return true;
    }