Kill Bill library of java.util.concurrent wrappers

'com.ning.billing.commons:killbill-concurrent:0.2.2'

<dependency>
	<groupId>com.ning.billing.commons</groupId>
	<artifactId>killbill-concurrent</artifactId>
	<version>0.2.2</version>
</dependency>

<dependency org="com.ning.billing.commons" name="killbill-concurrent" rev="0.2.2"/>

"com.ning.billing.commons", "killbill-concurrent", "0.2.2"