'org.webjars.bower:system.js:0.18.4'
<dependency>
<groupId>org.webjars.bower</groupId>
<artifactId>system.js</artifactId>
<version>0.18.4</version>
</dependency>
<dependency org="org.webjars.bower" name="system.js" rev="0.18.4"/>
"org.webjars.bower", "system.js", "0.18.4"