@abc.abstractmethod
    def participants(self, experiment_name, variant):
        return  # pragma: nocover
Cleans up page headers, line breaks, and hyphens for all plain pages in the book directory. 
dataset/ETHPy150Open ryanpetrello/cleaver/cleaver/backend/__init__.py/CleaverBackend.participants--crossover with--dataset/ETHPy150Open inpho/vsm/vsm/extensions/htrc.py/proc_htrc_book