def _dimension_keys(self):
        return [tuple(zip([d.name for d in self.kdims], [k] if self.ndims == 1 else k))
                for k in self.keys()]
Call _ls_logs() with self.mock_fs and self.mock_matcher,
dataset/ETHPy150Open ioam/holoviews/holoviews/core/spaces.py/HoloMap._dimension_keys--crossover with--dataset/ETHPy150Open Yelp/mrjob/tests/logs/test_wrap.py/LsLogsTestCase._ls_logs