如何从MDbutton中的on_text_validate触发MDTextField中的on_release？

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput

class MyLayout(BoxLayout):
    def __init__(self, **kwargs):
        super(MyLayout, self).__init__(**kwargs)
        
        button = Button(text="Submit", on_release=self.on_button_release)
        self.add_widget(button)
        
        text_input = TextInput(multiline=False, on_text_validate=self.on_text_validate)
        self.add_widget(text_input)
        
    def on_button_release(self, instance):
        print("Button released")
        
    def on_text_validate(self, instance):
        print("Text validated")
        # 在这里触发MDTextField的on_release事件

class MyApp(App):
    def build(self):
        return MyLayout()

if __name__ == "__main__":
    MyApp().run()