def add_work_units(self, name_space, work_units):
        wu = Empty()
        wu.spec = {'config': self.config}
        wu.key = work_units[0][0]
        highlights_worker(wu)
This mock of :class:`coordinate.TaskMaster` calls
dataset/ETHPy150Open dossier/dossier.models/dossier/models/tests/test_highlights.py/MockTaskMaster.add_work_units