code: def last_updated(self):
          '''Return the last_updated time of the current request item
  
          :return: A DateTime object
          :rettype: datetetime.datetime
          '''
  
          key = self.get_key_from_request()
          max_age = self.get_max_age()
  
          if max_age == 0:
              return datetime.fromtimestamp(Storage.start_time)
  
          ttl = self.get_storage().ttl(key)
  
          if ttl >= 0:
              return datetime.now() - timedelta(
                  seconds=(
                      max_age - ttl
                  )
              )
  
          if ttl == -1:
              # Per Redis docs: -1 is no expiry, -2 is does not exists.
              return datetime.fromtimestamp(Storage.start_time)
  
          # Should never reach here. It means the storage put failed or the item
          # somehow does not exists anymore.
          return datetime.now(f last_updated(self):
          '''Return the last_updated time of the current request item
  
          :return: A DateTime object
          :rettype: datetetime.datetime
          '''
  
          key = self.get_key_from_request()
          max_age = self.get_max_age()
  
          if max_age == 0:
              return datetime.fromtimestamp(Storage.start_time)
  
          ttl = self.get_storage().ttl(key)
  
          if ttl >= 0:
              return datetime.now() - timedelta(
                  seconds=(
                      max_age - ttl
                  )
              )
  
          if ttl == -1:
              # Per Redis docs: -1 is no expiry, -2 is does not exists.
              return datetime.fromtimestamp(Storage.start_time)
  
          # Should never reach here. It means the storage put failed or the item
          # somehow does not exists anymore.
          return datetime.now()
docs: Return the last_updated time of the current request item
  
          :return: A DateTime object
          :rettype: datetetime.datetime