<dependency>
<groupId>org.opendaylight.yangtools.model</groupId>
<artifactId>yang-ext</artifactId>
<version>2013.09.07.4-Helium</version>
</dependency>
libraryDependencies += "org.opendaylight.yangtools.model" % "yang-ext" % "2013.09.07.4-Helium"
@Grapes(
@Grab(group='org.opendaylight.yangtools.model', module='yang-ext', version='2013.09.07.4-Helium')
)
<dependency org="org.opendaylight.yangtools.model" name="yang-ext" rev="2013.09.07.4-Helium" />
<parent> <groupId>org.opendaylight.yangtools.model</groupId> <artifactId>model-parent</artifactId> <version>0.6.2-Helium</version> </parent>