Bug 184762 BIRT Model - Enhancments to the level defintion
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* Call this method cautiously ONLY on the condition that the library file
	 * is REALLY changed outside. After reload successfully, the command stack
	 * is cleared.
	 * 
	 * @param libraryToReload
	 *            the library instance
	 * @throws SemanticException
	 *             if error is encountered when handling
	 *             <code>IncludeLibrary</code> structure list. Or it maybe
	 *             because that the given library is not found in the design. Or
	 *             that the library has descedents in the current module
	 * @throws DesignFileException
	 *             if the library file is not found, or has fatal error.
	 */
	public void reloadLibrary( LibraryHandle libraryToReload )
			throws SemanticException, DesignFileException
	{
		if ( libraryToReload == null )
			return;
		LibraryCommand command = new LibraryCommand( module );
		command.reloadLibrary( libraryToReload.getLocation( ) );
	}
	/**
	 * Reloads all libraries this module included.
	 * <p>
	 * Call this method cautiously ONLY on the condition that the library file
	 * is REALLY changed outside. After reload successfully, the command stack
	 * is cleared.
	 * 
	 * {@link #reloadLibrary(LibraryHandle)}