src/it/projects/file-sets/include-parent-dir/child/pom.xml

<?xml version="1.0"?><project>
  <parent>
    <artifactId>include-parent-dir</artifactId>
    <groupId>test</groupId>
    <version>1.0-SNAPSHOT</version>
  </parent>
  <modelVersion>4.0.0</modelVersion>
    <artifactId>child</artifactId>
  <name>Maven Quick Start Archetype</name>
  <version>1.0-SNAPSHOT</version>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-assembly-plugin</artifactId>
        <configuration>
          <descriptors>
            <descriptor>src/assemble/parent.xml</descriptor>
          </descriptors>
        </configuration>
        <executions>
          <execution>
            <id>build-parent-assembly</id>
            <phase>package</phase>
            <goals>
              <goal>directory-single</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>