@property
    def is_dir(self):
        return S_ISDIR(self.st_mode)
Functions that must be defined by the custom learner:
dataset/ETHPy150Open jonathanslenders/python-deployer/deployer/host/base.py/Stat.is_dir--crossover with--dataset/ETHPy150Open sisl/Chimp/chimp/learners/dqn_learner.py/DQNLearner.__init__