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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 populateMainMenu(self, parentMenu):
 """Populates the main menu. The main menu looks as follows: Plugins - Plugin manager (fixed item) - Separator (fixed item) - <Plugin #1 name> (this is the parentMenu passed) If no items were populated by the plugin then there will be no <Plugin #N name> menu item shown. It is suggested to insert plugin configuration item here if so. """

        parentMenu.addAction("Configure", self.configure)
        parentMenu.addAction("Collect garbage", self.__collectGarbage)