'org.apache.tomcat:tomcat:8.0.21'
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat</artifactId>
<version>8.0.21</version>
</dependency>
<dependency org="org.apache.tomcat" name="tomcat" rev="8.0.21"/>
"org.apache.tomcat", "tomcat", "8.0.21"