def exportValue(self, vf, value):
        m = StrStrHashMap(value)
        keysAndValues = []
        for i in m.keys():
            keysAndValues.append(i)
            keysAndValues.append(m[i])
def closeEvent(self, event: QCloseEvent):
        settings.write("{}/geometry".format(self.__class__.__name__), self.saveGeometry())
        super().closeEvent(event)