:sig String backtrace_capture(u32 max_frames = 32, u32 skip_frames = 0) :params max_frames : maximum number of frames to capture skip_frames : number of newest frames to omit return value : formatted backtrace string :see >runtime backtrace_get_frames signal_name :content Captures and formats a native backtrace for the current call stack. This helper is for diagnostics. It is used by runtime error reporting paths and can also be useful in local debugging pages. Example: :example print("backtrace_capture example\n");