correct duplicate finding of references

Author: d-biehl

robotcode/language_server/robotframework/parts/references.py

@@ -83,6 +83,7 @@ def _find_method(self, cls: Type[Any]) -> Optional[_ReferencesMethod]:
         return None
 
     @language_id("robotframework")
+    @_logger.call
     async def collect(
         self, sender: Any, document: TextDocument, position: Position, context: ReferenceContext
     ) -> Optional[List[Location]]:

robotcode/language_server/robotframework/utils/ast.py

@@ -238,8 +238,6 @@ def iter_over_keyword_names_and_owners(full_name: str) -> Iterator[Tuple[Optiona
     yield None, full_name
 
     tokens = full_name.split(".")
-    if len(tokens) == 1:
-        yield None, tokens[0]
-    else:
+    if len(tokens) > 1:
         for i in range(1, len(tokens)):
             yield ".".join(tokens[:i]), ".".join(tokens[i:])