def add_daily(name, user, command, environment=None):
    add_task(name, '@daily', user, command, environment)
Removes descendant nodes for the branches in 'active_nodes'.
dataset/ETHPy150Open ronnix/fabtools/fabtools/cron.py/add_daily--crossover with--dataset/ETHPy150Open CoAxLab/DeBaCl/debacl/level_set_tree.py/LevelSetTree._collapse_leaves