def _get_value(self, entity):
    return entity._entity_key
Index tree and convert counts to np.array in corresponding order
dataset/ETHPy150Open GoogleCloudPlatform/datastore-ndb-python/ndb/model.py/ModelKey._get_value--crossover with--dataset/ETHPy150Open biocore/scikit-bio/skbio/diversity/_util.py/_vectorize_counts_and_tree