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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 _delete(self):
 """Deletes this AssessmentSection from database. Will be called by AssessmentTaken._delete() for clean-up purposes. """

        collection = JSONClientValidated('assessment',
                                         collection='AssessmentSection',
                                         runtime=self._runtime)
        collection.delete_one({'_id': ObjectId(self.get_id().get_identifier())})