		private void drawSingleCluster(UGraphic ug, IGroup group, ElkNode elkNode) {
			final Point2D corner = getPosition(elkNode);
			final URectangle rect = new URectangle(elkNode.getWidth(), elkNode.getHeight());

			PackageStyle packageStyle = group.getPackageStyle();
			final ISkinParam skinParam = diagram.getSkinParam();
			if (packageStyle == null)
				packageStyle = skinParam.packageStyle();

			final UmlDiagramType umlDiagramType = diagram.getUmlDiagramType();

			final Style style = Cluster.getDefaultStyleDefinition(umlDiagramType.getStyleName(), group.getUSymbol())
					.getMergedStyle(skinParam.getCurrentStyleBuilder());
			final double shadowing = style.value(PName.Shadowing).asDouble();
			final UStroke stroke = Cluster.getStrokeInternal(group, skinParam, style);

			HColor backColor = getBackColor(umlDiagramType);
			backColor = Cluster.getBackColor(backColor, skinParam, group.getStereotype(), umlDiagramType.getStyleName(),
					group.getUSymbol());

			final double roundCorner = group.getUSymbol() == null ? 0
					: group.getUSymbol().getSkinParameter().getRoundCorner(skinParam, group.getStereotype());

			final TextBlock ztitle = getTitleBlock(group);
			final TextBlock zstereo = TextBlockUtils.empty(0, 0);

			final ClusterDecoration decoration = new ClusterDecoration(packageStyle, group.getUSymbol(), ztitle,
					zstereo, 0, 0, elkNode.getWidth(), elkNode.getHeight(), stroke);

			final HColor borderColor = HColorUtils.BLACK;
			decoration.drawU(ug.apply(new UTranslate(corner)), backColor, borderColor, shadowing, roundCorner,
					skinParam.getHorizontalAlignment(AlignmentParam.packageTitleAlignment, null, false, null),
					skinParam.getStereotypeAlignment(), 0);

//			// Print a simple rectangle right now
//			ug.apply(HColorUtils.BLACK).apply(new UStroke(1.5)).apply(new UTranslate(corner)).draw(rect);
		}
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.