def yaml(self):
        return yaml.dump(self.serialized, default_flow_style=False,
                         encoding=None)
def on_lower_bound_changed(self):
        self.ui.spinBoxUpperBound.setMinimum(self.ui.spinBoxLowerBound.value())
        self.ui.spinBoxBoundaryNumber.setMaximum(math.ceil((self.ui.spinBoxUpperBound.value()
                                                            - self.ui.spinBoxLowerBound.value()) / 2))