def has_layer(fcollection):
    for val in fcollection.itervalues():
        if has_features(val):
            return True
    return False
Same as ``collection.find``, return model object instead of simple dict.
dataset/ETHPy150Open bkg/django-spillway/spillway/collections.py/has_layer--crossover with--dataset/ETHPy150Open tevino/mongu/mongu.py/Model.find