* Copyright 2015-2015 Amazon Technologies, Inc.
* Licensed 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:
* This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
* OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and
* limitations under the License.
Even though the internal name map and value map are unmodifiable, this object is only as unmodifiable as the underlying values in it's value map. In turn, the values in the value maps are essentially provided by the users of this library. In other words, this object is thread-safe as long as the underlying values provided by the users are thread-safe.