title: Actual use of lockInterruptibly for a ReentrantLock
body: <p>What do you actually use for this method <code>lockInterruptibly</code>? I have read the <a href="http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/locks/ReentrantLock.html" rel="noreferrer">API</a> however it's not very clear to me. Could anybody express it in other words?</p>