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
if ( slotID == IDesignElementModel.NO_SLOT )
			return null;
		return containerHandle.getSlot( slotID );
	}
	/**
	 * Gets a handle for the container's property what holds this element.
	 * 
	 * @return the property handle in which this element resides,
	 *         <code>null</code> if this element has no container
	 */
	public PropertyHandle getContainerPropertyHandle( )
	{
		DesignElementHandle containerHandle = getContainer( );
		if ( containerHandle == null )
			return null;
		return containerHandle.getPropertyHandle( getElement( ).getContainerInfo( )
				.getPropertyName( ) );
	}
	/**
	 * Returns a handle to the given slot. If this element has no such slot,
	 * <code>null</code> will be returned.
	 * 
	 * @param slotID
	 *            the identifier of the slot for which to obtain a handle
	 * @return the handle for the requested slot
	 */
	public SlotHandle getSlot( int slotID )
	{
		int slotCount = getDefn( ).getSlotCount( );
		if ( slotCount == 0 )