NRL-1114 add comments back

Author: eesa456

layer/nrlf/core/dynamodb/repository.py

@@ -225,6 +225,7 @@ def search(
         pointer_types: Optional[List[str]] = [],
         categories: Optional[List[str]] = [],
     ) -> Iterator[DocumentPointer]:
+        """"""
         logger.log(
             LogReference.REPOSITORY020,
             nhs_number=nhs_number,

layer/nrlf/core/validators.py

@@ -444,7 +444,7 @@ def _validate_type_category_mapping(self, model: DocumentReference):
         category_id = f"{category_coding.system}|{category_coding.code}"
 
         if type_id not in PointerTypes.list() or category_id not in Categories.list():
-            return
+            return  # No point mapping to an unexisting/unsupported type/category
 
         if type_id.startswith("https://nicip.nhs.uk|"):
             allowed_categories = TYPE_CATEGORIES.get(type_id, set())