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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 index_raw_bulk(self, header, document):
 """ Function helper for fast inserting :param header: a string with the bulk header must be ended with a newline :param document: a json document string must be ended with a newline """

        self.bulker.add("%s%s" % (header, document))
        return self.flush_bulk()