Bug 176436 Charts Imported from Libraries do not update when libraries change
During a live presentation of BIRT at EclipseCon, we came across a rather embarassing issue. When charts are included in a library, and imported into a report design from a library, any changes to the library instance of the chart do not reflect in the report itself.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
/**
	 * Adds a report item to the end of the given slot. The item must be newly
	 * created and not yet added to the design.
	 * 
	 * @param child
	 *            handle to the newly created element
	 * @param slotId
	 *            slot id in which the child item will be added.
	 * @throws ContentException
	 *             if the element is not allowed in the slot
	 * @throws NameException
	 *             if the element has a duplicate or illegal name
	 * 
	 */
	public void addElement( DesignElementHandle child, int slotId )
			throws ContentException, NameException
	{
		SlotHandle slotHandle = getSlot( slotId );
		if ( slotHandle != null )
			slotHandle.add( child );
	}
	/**
	 * Returns the methods defined on the element definition.
	 * 
	 * @return List contains the methods.
	 * 
	 */
	public List getMethods( )
	{
		return getElement( ).getDefn( ).getMethods( );