#
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# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
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# pytype: skip-file
from __future__ import absolute_import
import enum
[docs]class Sentinel(enum.Enum):
"""
A type-safe sentinel class
"""
sentinel = object()