'com.ning.billing:killbill-oss-parent:0.5.21'
<dependency>
<groupId>com.ning.billing</groupId>
<artifactId>killbill-oss-parent</artifactId>
<version>0.5.21</version>
</dependency>
<dependency org="com.ning.billing" name="killbill-oss-parent" rev="0.5.21"/>
"com.ning.billing", "killbill-oss-parent", "0.5.21"