def _GetMetadata(self):
    raise NotImplementedError
Get all the subject configurations from the XML data.
dataset/ETHPy150Open google/cauliflowervest/src/cauliflowervest/client/base_client.py/CauliflowerVestClient._GetMetadata--crossover with--dataset/ETHPy150Open PublicMapping/DistrictBuilder/django/publicmapping/redistricting/__init__.py/StoredConfig.filter_subjects