Function harfbuzz_sys::hb_buffer_add_codepoints

pub unsafe extern "C" fn hb_buffer_add_codepoints(
    buffer: *mut hb_buffer_t, 
    text: *const hb_codepoint_t, 
    text_length: c_int, 
    item_offset: c_uint, 
    item_length: c_int
)