String source = parseSource(fillNode.source);
if (source == null)
{
// Exception: Missing source attribute in <BitmapGraphic> or <BitmapFill>.
throw new FXGException(fill.getStartLine(), fill.getStartColumn(), "MissingSourceAttribute");
}
DefineBits imageTag = createDefineBits(fill, source);
//process the filters later to avoid masking
List<FilterNode> filters = null;