def test_formatFlatEventFieldNamesSameAgain(self):
        event = self._test_formatFlatEvent_fieldNamesSame()
        self._test_formatFlatEvent_fieldNamesSame(event)
The same event flattened twice gives the same (already rendered)
dataset/ETHPy150Open twisted/twisted/twisted/logger/test/test_flatten.py/FlatFormattingTests.test_formatFlatEventFieldNamesSameAgain