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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 get_annotations(self):
 """ Fetch the annotations field if it does not exist. """

        try:
            obj_list = self.__dict__['annotations']
            return [Annotation(i) for i in obj_list]
        except KeyError:
            self._lazy_load()
            obj_list = self.__dict__['annotations']
            return [Annotation(i) for i in obj_list]