code: func (v *FileChooserNativeDialog) SetAcceptLabel(accept_label string) {
  	cstr := C.CString(accept_label)
  	defer C.free(unsafe.Pointer(cstr))
  	C.gtk_file_chooser_native_set_accept_label(v.native(), (*C.char)(cstr))
  }
docs: // SetAcceptLabel is a wrapper around gtk_file_chooser_native_set_accept_label().