Bug 120317 Set "dimension" property to 3D in "properties" view, error appears in layout editor.
Description: Set "dimension" property to 3D in "properties" view, error appears in layout editor. Steps to reproduce: 1. Add a 2D chart in property editor. 2. Set its dimension property to "three-dimension" in properties view. 3. Error appears in chart.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/extension/PeerExtensibilityProvider.java
reportItem = null;
		if ( source.reportItem != null )
		{
			reportItem = source.reportItem.copy( );
		}
		
		extensionPropValues = new HashMap( );
		Iterator it = source.extensionPropValues.keySet( ).iterator( );
		while ( it.hasNext( ) )
		{
			String propName = (String) it.next( );
			PropertyDefn propDefn = element.getPropertyDefn( propName );
			Object value = source.extensionPropValues.get( propName );
			Object valueToSet = ModelUtil.copyValue( propDefn, value );
			extensionPropValues.put( propName, valueToSet );
		}
	}
	/**
	 * Return the extension element, which implements the interface
	 * <code>IReportItem</code>.
	 * 
	 * @return the extension element
	 */
	public IReportItem getExtensionElement( )
	{
		return reportItem;
	}
}