'org.webjars.npm:engine.io:1.5.2'
<dependency>
<groupId>org.webjars.npm</groupId>
<artifactId>engine.io</artifactId>
<version>1.5.2</version>
</dependency>
<dependency org="org.webjars.npm" name="engine.io" rev="1.5.2"/>
"org.webjars.npm", "engine.io", "1.5.2"