Bug 184762 BIRT Model - Enhancments to the level defintion
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* <tr>
 * <td>Styles</td>
 * <td>User-defined styles used to format elements in the report. Each style
 * must have a unique name within the set of styles for this report.</td>
 * </tr>
 * 
 * <tr>
 * <td>Page Setup</td>
 * <td>The layout of the master pages within the report.</td>
 * </tr>
 * 
 * <tr>
 * <td>Components</td>
 * <td>Reusable report items defined in this design. Report items can extend
 * these items. Defines a "private library" for this design.</td>
 * </tr>
 * 
 * <tr>
 * <td>Translations</td>
 * <td>The list of externalized messages specifically for this report.</td>
 * </tr>
 * 
 * <tr>
 * <td>Images</td>
 * <td>A list of images embedded in this report.</td>
 * </tr>
 * 
 * </table>
 */
public abstract class ModuleHandle extends DesignElementHandle