def __init__(self, groups=None):
        super(GroupedRequirements, self).__init__(NamedRequirements)
        self.groups = groups or self.default_groups
        self.filename = None
        self.create_default_groups()
def closeEvent(self, event: QCloseEvent):
        settings.write("{}/geometry".format(self.__class__.__name__), self.saveGeometry())
        super().closeEvent(event)