code: def ClaimRecords(self,
                     limit=10000,
                     timeout="30m",
                     start_time=None,
                     record_filter=lambda x: False,
                     max_filtered=1000):
      
      if not self.locked:
        raise aff4.LockError("Queue must be locked to claim records.")
  
      with data_store.DB.GetMutationPool() as mutation_pool:
        return mutation_pool.QueueClaimRecords(
            self.urn,
            self.rdf_type,
            limit=limit,
            timeout=timeout,
            start_time=start_time,
            record_filter=record_filter,
            max_filtered=max_filtered)
docs: Returns and claims up to limit unclaimed records for timeout seconds.
  
      Returns a list of records which are now "claimed", a claimed record will
      generally be unavailable to be claimed until the claim times out. Note
      however that in case of an unexpected timeout or other error a record might
      be claimed twice at the same time. For this reason it should be considered
      weaker than a true lock.
  
      Args:
        limit: The number of records to claim.
  
        timeout: The duration of the claim.
  
        start_time: The time to start claiming records at. Only records with a
          timestamp after this point will be claimed.
  
        record_filter: A filter method to determine if the record should be
          returned. It will be called serially on each record and the record will
          be filtered (not returned or locked) if it returns True.
  
        max_filtered: If non-zero, limits the number of results read when
          filtered. Specifically, if max_filtered filtered results are read
          sequentially without any unfiltered results, we stop looking for
          results.
  
      Returns:
        A list (id, record) where record is a self.rdf_type and id is a record
        identifier which can be used to delete or release the record.
  
      Raises:
        LockError: If the queue is not locked.