def default_value(self):
    return self.default
Pops out variables from params which starts with `variable_prefix`.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/db/__init__.py/Property.default_value--crossover with--dataset/ETHPy150Open saltstack/salt/salt/modules/serverdensity_device.py/_clean_salt_variables