@classmethod
def focus(cls, appName):
    """ Searches for exact text, case insensitive, anywhere in the window title. 

        Brings the matching window to the foreground.

        As a class method, accessible as `App.focus(appName)`. As an instance method,
        accessible as `App(appName).focus()`.
        """
    app = cls(appName)
    return app.focus()
