1) Copyright 2008-2015 MongoDB, 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

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License 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.

2) The following files: Immutable.java, NotThreadSafe.java, ThreadSafe.java

   Copyright (c) 2005 Brian Goetz and Tim Peierls
   Released under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.5)
   Official home: http://www.jcip.net

   Any republication or derived work distributed in source code form
   must include this copyright and license notice.

3) The following files: Assertions.java, AbstractCopyOnWriteMap.java, CopyOnWriteMap.java

    Copyright (c) 2008-2014 Atlassian Pty Ltd

    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

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License 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.

4) The following files: Base64Codec.java

    Copyright 1999,2005 The Apache Software Foundation.

    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

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License 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.
