如何在KivyMD中使用"NoTransition“？

from kivymd.app import MDApp
from kivy.uix.screenmanager import NoTransition, ScreenManager, Screen

class MyScreen(Screen):
    def __init__(self, **kwargs):
        super(MyScreen, self).__init__(**kwargs)
        self.manager = None
        self.transition = NoTransition()

    # 添加屏幕的其他相关代码和布局

class MyScreenManager(ScreenManager):
    def __init__(self, **kwargs):
        super(MyScreenManager, self).__init__(**kwargs)
        self.transition = NoTransition()

        # 添加其他屏幕(Screen)到管理器中
        self.add_widget(MyScreen(name='screen1'))
        self.add_widget(MyScreen(name='screen2'))

class MyApp(MDApp):
    def build(self):
        return MyScreenManager()