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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, bulk_id):
 """Update many objects with a single toa :param str bulk_id: The bulk id for the job you want to delete """


        collection_name = self.request.headers.get("collection")

        if not collection_name:
            self.raise_error(400, "Missing a collection name header")

        self.revisions = BaseAsyncMotorDocument("%s_revisions" % collection_name)

        self.logger.info("Deleting revisions with bulk_id %s" % (bulk_id))

        result = yield self.revisions.collection.remove({"meta.bulk_id": bulk_id})

        self.write(result)