<plugins>
        <plugin>
          <groupId>org.codehaus.modello</groupId>
          <artifactId>modello-maven-plugin</artifactId>
          <executions>
            <execution>
              <id>modello-site-docs</id>
              <goals>
                <goal>xdoc</goal>
                <goal>xsd</goal>
              </goals>
              <phase>none</phase>
            </execution>
          </executions>

                <param>generateLocationClasses=true</param>
              </params>
            </configuration>
          </execution>
          <execution>
            <id>modello-site-docs</id>
            <goals>
              <goal>xdoc</goal>
              <goal>xsd</goal>
            </goals>
            <phase>generate-resources</phase>
            <configuration>

                <param>minimalVersion=4.0.0</param>
              </params>
            </configuration>
          </execution>
          <execution>
            <id>modello-site-docs</id>
            <phase>none</phase>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>