Align documentation and implementation

No effects were observed on Make-managed files.

Signed-off-by: Alex Nelson <[email protected]>

Author: ajnelson-nist

case_mapping/base.py

@@ -247,9 +247,9 @@ def __init__(
     @unpack_args_array
     def append_facets(self, *args):
         """
-        :param args: A single/tuple of ObservableObjects
+        :param args: A single/tuple of Facets
         """
-        self._append_observable_objects("uco-core:hasFacet", *args)
+        self._append_stuff("uco-core:hasFacet", *args, objects=True)
 
     @unpack_args_array
     def append_core_objects(self, *args):