'org.apache.maven.plugins:maven-plugin-plugin:2.1'
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<version>2.1</version>
</dependency>
<dependency org="org.apache.maven.plugins" name="maven-plugin-plugin" rev="2.1"/>
"org.apache.maven.plugins", "maven-plugin-plugin", "2.1"