'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"