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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 build_api_struct(self):
 """ Calls parent's method and just adds the addtional field 'action', that is required to form the structure that Atlas API is accepting. """

        data = super(AtlasChangeSource, self).build_api_struct()
        data.update({"action": self._action})
        return data