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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_dict(self):
 """Convert the cells to a dictionary. This is intended to be used with HappyBase, so the column family and column qualiers are combined (with ``:``). :rtype: dict :returns: Dictionary containing all the data in the cells of this row. """

        result = {}
        for column_family_id, columns in six.iteritems(self._cells):
            for column_qual, cells in six.iteritems(columns):
                key = _to_bytes(column_family_id) + b":" + _to_bytes(column_qual)
                result[key] = cells
        return result