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/extension/PeerExtensibilityProvider.java
}
		}
		return propDefn;
	}
	/**
	 * Gets all the extension model properties defined by
	 * <code>IReportItem</code>.
	 * 
	 * @return the extension model properties, null if extended element is null
	 */
	private IPropertyDefinition[] getExtensionModelPropertyDefns( )
	{
		if ( reportItem == null )
			return null;
		return reportItem.getPropertyDefinitions( );
	}
	/**
	 * Gets the list of style masks for Model style properties.
	 * 
	 * @return the list of the style masks
	 */
	protected List getStyleMasks( )
	{
		return Collections.EMPTY_LIST;
	}
	/**
	 * Returns the value of extension property or extension model property.
	 * 
	 * @param propName
	 *            name of the property