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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def hide(self):
 """Hides the main window of the terminal and sets the visible flag to False. """

        if not HidePrevention(self.window).may_hide():
            return
        self.hidden = True
        self.get_widget('window-root').unstick()
        self.window.hide()