code: func EntryBufferNew(initialChars string, nInitialChars int) (*EntryBuffer, error) {
  	cstr := C.CString(initialChars)
  	defer C.free(unsafe.Pointer(cstr))
  	c := C.gtk_entry_buffer_new((*C.gchar)(cstr), C.gint(nInitialChars))
  	if c == nil {
  		return nil, nilPtrErr
  	}
  
  	e := wrapEntryBuffer(glib.Take(unsafe.Pointer(c)))
  	return e, nil
  }
docs: // EntryBufferNew() is a wrapper around gtk_entry_buffer_new().