to generate the reports on the Maven-generated site.
            These reports will be run when a user executes {@code mvn site}.
            All the reports will be included in the navigation bar for browsing.
          </description>
          <association>
            <type>Reporting</type>
          </association>
        </field>
      </fields>
    </class>
    <class>

         * accessor types to resolve the value for each successive expression part.
         * Finally, return the result of the last expression part's resolution.</p>
         *
         * <p><b>NOTE:</b> The object-graph nagivation actually takes place via the
         * {@link ReflectionValueExtractor} class.</p>
         */
        public Object getValue(String expression) {
            if (expression == null || expression.trim().isEmpty()) {