def test_init_scalar(self):
        d = Data()
        dc = DataCollection(d)
        assert d in dc
Builds the property filter spec.
dataset/ETHPy150Open glue-viz/glue/glue/core/tests/test_data_collection.py/TestDataCollection.test_init_scalar--crossover with--dataset/ETHPy150Open openstack/oslo.vmware/oslo_vmware/vim_util.py/build_property_filter_spec