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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_series(self):
 """Convert this array into a pandas.Series. The Series is indexed by the Cartesian product of index coordinates (in the form of a :py:class:`pandas.MultiIndex`). """

        index = self.coords.to_index()
        return pd.Series(self.values.reshape(-1), index=index, name=self.name)