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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 cget(self, k):
 """cget redirect to support additional options"""

        if k == "themebg":
            return self._themebg
        elif k == "toplevel":
            return self._toplevel
        elif k == "theme":
            return self.current_theme
        return tk.Tk.cget(self, k)