<dependency>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-extensions</artifactId>
  <version>34</version>
  <type>pom</type>
</dependency>

'org.apache.maven.plugins:maven-extensions:pom:34'

<dependency org="org.apache.maven.plugins" name="maven-extensions" rev="34">
  <artifact name="maven-extensions" type="pom" />
</dependency>

@Grapes(
@Grab(group='org.apache.maven.plugins', module='maven-extensions', version='34')
)

compile 'org.apache.maven.plugins:maven-extensions:34'

libraryDependencies += "org.apache.maven.plugins" % "maven-extensions" % "34"

[org.apache.maven.plugins/maven-extensions "34"]