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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 register_signals_oaiset(self):
 """Register OAISet signals to update records."""

        from .models import OAISet
        from .receivers import after_insert_oai_set, \
            after_update_oai_set, after_delete_oai_set
        listen(OAISet, 'after_insert', after_insert_oai_set)
        listen(OAISet, 'after_update', after_update_oai_set)
        listen(OAISet, 'after_delete', after_delete_oai_set)