Tighten the type discriminators.

Some of them are looser than necessary. This won't constitute a breaking
change, as the resulting field type will be the same, just without using
the polymorphic decoding.

The idea is to increase precision, as well as allow us to drop
unnecessary type discriminators from the payload in the future.

Author: anoto-moniz

src/citrine/__version__.py

@@ -1 +1 @@
-__version__ = "3.2.14"
+__version__ = "3.2.15"

src/citrine/informatics/predictors/chemical_formula_featurizer.py

@@ -2,7 +2,7 @@
 
 from citrine._rest.resource import Resource
 from citrine._serialization import properties
-from citrine.informatics.descriptors import ChemicalFormulaDescriptor, Descriptor
+from citrine.informatics.descriptors import ChemicalFormulaDescriptor
 from citrine.informatics.predictors import PredictorNode
 
 __all__ = ['ChemicalFormulaFeaturizer']
@@ -130,7 +130,7 @@ class ChemicalFormulaFeaturizer(Resource["ChemicalFormulaFeaturizer"], Predictor
 
     """
 
-    input_descriptor = properties.Object(Descriptor, 'input')
+    input_descriptor = properties.Object(ChemicalFormulaDescriptor, 'input')
     features = properties.List(properties.String, 'features')
     excludes = properties.List(properties.String, 'excludes', default=[])
     powers = properties.List(properties.Integer, 'powers')

src/citrine/informatics/predictors/molecular_structure_featurizer.py

@@ -5,7 +5,7 @@
 
 from citrine._rest.resource import Resource
 from citrine._serialization import properties as _properties
-from citrine.informatics.descriptors import Descriptor, MolecularStructureDescriptor
+from citrine.informatics.descriptors import MolecularStructureDescriptor
 from citrine.informatics.predictors import PredictorNode
 
 __all__ = ['MolecularStructureFeaturizer']
@@ -78,7 +78,7 @@ class MolecularStructureFeaturizer(Resource["MolecularStructureFeaturizer"], Pre
 
     """
 
-    input_descriptor = _properties.Object(Descriptor, 'descriptor')
+    input_descriptor = _properties.Object(MolecularStructureDescriptor, 'descriptor')
     features = _properties.List(_properties.String, 'features')
     excludes = _properties.List(_properties.String, 'excludes')