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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 sorted_key_list(self):
 """Returns list of keys sorted according to their absolute time."""

        if not self.is_baked:
            self.bake()
        key_value_tuple = sorted(self.dct.items(),
                                 key=lambda x: x[1]['__abs_time__'])
        skl = [k[0] for k in key_value_tuple]
        return skl