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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def options_scope(self):
 """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. """

    if self.is_global():
      return self.subsystem_cls.options_scope
    else:
      return self.subsystem_cls.subscope(self.scope)