maven/maven-archetype/maven-archetypes/pom.xml

<model>
  <parent>
    <artifactId>maven-archetype</artifactId>
    <groupId>org.apache.maven</groupId>
    <version>1.0-alpha-1-SNAPSHOT</version>
  </parent>
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.apache.maven.archetypes</groupId>
  <artifactId>maven-archetypes</artifactId>
  <packaging>pom</packaging>
  <version>1.0-alpha-1-SNAPSHOT</version>
  <modules>
    <module>maven-archetype-mojo</module>
    <module>maven-archetype-quickstart</module>
    <module>maven-archetype-webapp</module>
  </modules>
</model>