CB HandlesNone

“HandlesNone” in a callback (CB) context is a feature that allows a function to explicitly manage situations where it might receive no data or a null value. Instead of causing errors or unexpected behavior, the callback knows how to handle the absence of data gracefully, often by executing a specific code path or returning a default response. This improves the robustness of programs by ensuring they can safely process cases where expected input is missing, making the code more reliable and easier to maintain.