def seek(self, offset, whence):
    assert offset == - self._size
    assert whence == os.SEEK_CUR
    assert self._buffer
    self._saught = True
This function deletes all entries for any policy-object
dataset/ETHPy150Open mtth/hdfs/hdfs/ext/avro/__init__.py/_SeekableReader.seek--crossover with--dataset/ETHPy150Open openstack/group-based-policy/gbpservice/tests/contrib/gbpfunctests/libs/config_libs.py/Gbp_Config.gbp_del_all_anyobj