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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 Initialize(self):
 """Open the delegate object."""

    if "r" in self.mode:
      delegate = self.Get(self.Schema.DELEGATE)
      if delegate:
        self.delegate = aff4.FACTORY.Open(
            delegate, mode=self.mode, token=self.token, age=self.age_policy)