Bug 152830 Need model's support to add jar files
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
}
	/**
	 * Returns the command stack that manages undo/redo operations for the
	 * design.
	 * 
	 * @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( )
	{