<plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>build-helper-maven-plugin</artifactId>
        <version>${build-helper-maven-plugin-version}</version>
        <!-- -->
        <executions>
          <execution>
            <id>attach-artifacts</id>
            <phase>package</phase>
            <goals>
              <goal>attach-artifact</goal>
            </goals>
            <configuration>
              <artifacts>
                <artifact>
                  <file>target/classes/features.xml</file>
                  <type>xml</type>
                  <classifier>features</classifier>
                </artifact>
              </artifacts>
            </configuration>
          </execution>
        </executions>
        <!-- -->
      </plugin>