def log_to_stream(level=None, fmt=None, datefmt=None):
    _add_urbansim_handler(
        logging.StreamHandler(), fmt=fmt, datefmt=datefmt, propagate=False)
Returns a query for all the descendants of a model instance.
dataset/ETHPy150Open UDST/urbansim/urbansim/utils/logutil.py/log_to_stream--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/ext/db/__init__.py/query_descendants