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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 to_frame(self, **kwargs):
 r"""Return a pandas DataFrame loaded from the worksheet data. Args: \**kwargs: passed to ``pandas.read_csv()`` (e.g. ``header``, ``index_col``) Returns: pandas.DataFrame: new ``DataFrame`` instance """

        df = export.write_dataframe(self._values, **kwargs)
        df.name = self.title
        return df