add dep stub

src/linkml_transformer/datamodel/transformer_model.yaml

@@ -246,6 +246,12 @@ classes:
         range: string
       stringification:
         range: StringificationConfiguration
+      deprecated:
+        range: boolean
+        description: >-
+          If a slot is deprecated, it will not be included in the target schema yaml file, and all references
+          in the source schema to that slot will be removed.  However, the deprecated slot will be added to an
+          "obsolete" yaml file that will be generated along with the target schema yaml file.
 
   EnumDerivation:
     is_a: ElementDerivation

src/linkml_transformer/transformer/object_transformer.py

@@ -55,6 +55,14 @@ def index(self, source_obj: Any, target: str = None):
         else:
             self.object_index = ObjectIndex(source_obj, schemaview=self.source_schemaview)
 
+    def deprecate(self, source_obj: Any, target: str = None):
+        """
+        Deprecate an object.
+
+        :param source_obj: source data structure to be deprecated
+        :param target: class to convert source object into
+        """
+
     def transform(
         self,
         source_obj: OBJECT_TYPE,
@@ -65,8 +73,9 @@ def transform(
         Transform a source object into a target object.
 
         :param source_obj: source data structure
-        :param source_type: source_obj instantiates this (may be class, type, or enum)
-        :param target_type: target_obj instantiates this (may be class, type, or enum)
+
+        :param source_type: source_obj instantiates this (source_type value may be class, type, or enum)
+        :param target_type: target_obj instantiates this (target_type value may be class, type, or enum)
         :return: transformed data, either as type target_type or a dictionary
         """
         sv = self.source_schemaview