def read_query_value(self, prop_handler, prop_query_value):
        if is_list_type(prop_query_value):
            return [prop_handler.value_for_query(v) for v in prop_query_value]
        else:
            return prop_handler.value_for_query(prop_query_value)
Returns a query value from the given query property handler and
dataset/ETHPy150Open jahlborn/appengine-rest-server/src/main/python/rest/__init__.py/ModelHandler.read_query_value