code: def refactor_rename_at_point(self, offset, new_name, in_hierarchy, docs):
          
          try:
              refactor = Rename(self.project, self.resource, offset)
          except RefactoringError as e:
              raise Fault(str(e), code=400)
          return self._get_changes(refactor, new_name,
                                   in_hierarchy=in_hierarchy, docs=docs)
docs: Rename the symbol at point.