Function harfbuzz_sys::bindings::hb_font_set_user_data

pub unsafe extern "C" fn hb_font_set_user_data(
    font: *mut hb_font_t,
    key: *mut hb_user_data_key_t,
    data: *mut c_void,
    destroy: hb_destroy_func_t,
    replace: hb_bool_t,
) -> hb_bool_t