Bug 156497 [Regression][Acceptance]Report isn't refreshed when delete used library file.
Description: Report isn't refreshed when delete used library file. Steps to reproduce: 1.New a library, add a label, input actuate. 2.New a report, extend lib.label 3.Delete the library file. 4.Refresh the report in Outline of the report Expected result: Empty label in Layout. Actual result: label with content "actuate" in Layout.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
*/
	protected boolean isInitialized = false;
	/**
	 * Constructs one module handle with the given module element.
	 * 
	 * @param module
	 *            module
	 */
	public ModuleHandle( Module module )
	{
		super( module );
	}
	/**
	 * Adds a new config variable.
	 * 
	 * @param configVar
	 *            the config variable
	 * @throws SemanticException
	 *             if the name is empty or the same name exists.
	 * 
	 */
	public void addConfigVariable( ConfigVariable configVar )
			throws SemanticException
	{
		ElementPropertyDefn propDefn = module
				.getPropertyDefn( CONFIG_VARS_PROP );
		if ( configVar != null && StringUtil.isBlank( configVar.getName( ) ) )
		{
			throw new PropertyValueException( getElement( ), propDefn,
					configVar,