docs: def find_loader(self, fullname):
          """Try to find a loader for the specified module, or the namespace
          package portions. Returns (loader, list-of-portions).
          This method is deprecated.  Use find_spec() instead.
          """
          spec = self.find_spec(fullname)
          if spec is None:
              return None, []
          return spec.loader, spec.submodule_search_locations or []