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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 save_data(self, idx):
 """Call method `save_data|` of all handled |IOSequences| objects registered under |OutputSequencesABC|."""

        for subseqs in self:
            if isinstance(subseqs, abctools.OutputSequencesABC):
                subseqs.save_data(idx)