def exportValue(self, vf, value):
        m = StrStrHashMap(value)
        keysAndValues = []
        for i in m.keys():
            keysAndValues.append(i)
            keysAndValues.append(m[i])
def _on_item_button_remove_clicked(self, button, item):
    self._locker.lock("emit_size_spin_button_value_changed")