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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):
 """The initialization method."""

    super(GRRFlow, self).Initialize()
    self._client_version = None
    self._client_os = None
    self._client_knowledge_base = None

    if "r" in self.mode:
      state = self.Get(self.Schema.FLOW_STATE_DICT)
      self.context = self.Get(self.Schema.FLOW_CONTEXT)
      self.runner_args = self.Get(self.Schema.FLOW_RUNNER_ARGS)
      args = self.Get(self.Schema.FLOW_ARGS)
      if args:
        self.args = args.payload

      if state:
        self.state = AttributedDict(state.ToDict())
      else:
        self.state = AttributedDict()

      self.Load()

    if self.state is None:
      self.state = AttributedDict()