Jandex Plugin

      <plugin>
        <groupId>org.jboss.jandex</groupId>
        <artifactId>jandex-maven-plugin</artifactId>
        <version>1.0.5</version>
        <executions>
          <execution>
            <id>make-index</id>
            <goals>
              <goal>jandex</goal>
            </goals>
            <!-- phase is 'process-classes by default' -->
            <configuration>
              <indexName>thorntail.idx</indexName>
            </configuration>
          </execution>
        </executions>
      </plugin>