def lastpart(self):
        self._fp.write("\n--" + self._boundary + "--\n")
Test for mixed dataset operations: check log file.
dataset/ETHPy150Open Southpaw-TACTIC/TACTIC/src/context/client/tactic-api-python-4.0.api04/Lib/MimeWriter.py/MimeWriter.lastpart--crossover with--dataset/ETHPy150Open GeoscienceAustralia/agdc/tests/test_abstract_ingester.py/TestIngester.test_mixed_ops_log