All classes are released to the public domain and may be used for any purpose
whatsoever without permission or acknowledgment. Portions of the
CopyOnWriteArrayList and ConcurrentReaderHashMap classes are adapted from Sun
JDK source code. These are copyright of Sun Microsystems, Inc, and are used
with their kind permission, as described in this license.
http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/sun-u.c.license.pdf

