code: def options_scope(self):
      
      if self.is_global():
        return self.subsystem_cls.options_scope
      else:
        return self.subsystem_cls.subscope(self.scope)
docs: The subscope for options of `subsystem_cls` scoped to `scope`.
  
      This is the scope that option values are read from when initializing the instance
      indicated by this dependency.