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
* 
	 * @return a command stack
	 * 
	 * @see CommandStack
	 */
	public CommandStack getCommandStack( )
	{
		return module.getActivityStack( );
	}
	/**
	 * Returns a slot handle to work with the top-level components within the
	 * report.
	 * 
	 * @return A handle for working with the components.
	 */
	public SlotHandle getComponents( )
	{
		return getSlot( COMPONENT_SLOT );
	}
	/**
	 * Returns the name of the tool that created the design.
	 * 
	 * @return the name of the tool
	 */
	public String getCreatedBy( )
	{
		return getStringProperty( CREATED_BY_PROP );
	}
	/**
	 * Returns a slot handle to work with the data sets within the report. Note