def register(self, sig_cls, signals):
        self._supported[sig_cls] = signals
Move data from old tethys_datasets and tethys_wps tables to the new unified tethys_services tables if they exist.
dataset/ETHPy150Open AnyMesh/anyMesh-Python/example/urwid/signals.py/Signals.register--crossover with--dataset/ETHPy150Open tethysplatform/tethys/tethys_services/migrations/0005_auto_20150424_2126.py/migrate_to_services