rlmesh_adapter_wrap_predict
Borrowed UTF-8, copied before another slot runs; NULL slot uses the base text.
RLMeshStatus rlmesh_adapter_wrap_predict(
RLMeshAdapter* adapter,
RLMeshPredictFn predict_fn,
void* user_data,
void (*free_user_data)(void* user_data),
RLMeshWrappedPredict** out
)