Artifact for event handling purposes according to the observer (observable) pattern.
'org.refcodes:refcodes-observer:0.4.0'
<dependency>
<groupId>org.refcodes</groupId>
<artifactId>refcodes-observer</artifactId>
<version>0.4.0</version>
</dependency>
<dependency org="org.refcodes" name="refcodes-observer" rev="0.4.0"/>
"org.refcodes", "refcodes-observer", "0.4.0"