:sig String backtrace_frames_string(void* const* frames, size_t size, u32 skip_frames = 0) :params frames : frame pointer array returned by native backtrace collection size : number of frames in the array skip_frames : number of newest frames to omit return value : formatted backtrace string :see >runtime capture_backtrace_string signal_name :content Formats a captured native backtrace frame array. Most page code should use `capture_backtrace_string()` instead. Use this helper when you already have raw frame pointers from lower-level diagnostic code.