def connect(self, service_name, handler):
        self.handlers.setdefault(service_name, []).append(handler)
Get all data of type target_type from ad provider,
dataset/ETHPy150Open rduplain/wsgi_party/wsgi_party.py/WSGIParty.connect--crossover with--dataset/ETHPy150Open chartbeat-labs/parselmouth/parselmouth/base.py/Parselmouth.construct_tree