'net.open-esb.core:observer:2.4.1'
<dependency>
<groupId>net.open-esb.core</groupId>
<artifactId>observer</artifactId>
<version>2.4.1</version>
</dependency>
<dependency org="net.open-esb.core" name="observer" rev="2.4.1"/>
"net.open-esb.core", "observer", "2.4.1"