Whether tamper can add a parameter to get prefix and suffix

I have read some documents of Tamper and the official example tamper, but I haven't found a place where I can get the suffix and prefix, and the tamper I wrote needs to use suffix and prefix. I wonder whether this function has been implemented. If so, please tell me. If not, could you consider adding this feature?

Start with the Tamper documentation and official tamper example mentioned in the issue. Check whether the current tamper entry point exposes prefix and suffix, and determine what interface would be needed if it does not. Done means documenting the existing capability or defining the requested feature clearly enough for implementation.