def __init__(self, config, content_type):
        self.config = config
        self.content_type = content_type
        self._initialize()
Validate the format of domain.
dataset/ETHPy150Open espeed/bulbs/bulbs/base/client.py/Request.__init__--crossover with--dataset/ETHPy150Open openstack/compass-core/compass/db/validator.py/is_valid_domain