<dependency>
<groupId>org.xwiki.commons</groupId>
<artifactId>xwiki-commons-observation-api</artifactId>
<version>15.10.9</version>
</dependency>
@Grapes(
@Grab(group='org.xwiki.commons', module='xwiki-commons-observation-api', version='15.10.9')
)
<dependency org="org.xwiki.commons" name="xwiki-commons-observation-api" rev="15.10.9" />