private Shape getVertexShape(AttributedVertex vertex) {
		if (vertex instanceof GroupVertex) {
			return VertexShape.STAR.getShape();
		}
		VertexShape vertexShape = options.getVertexShape(vertex);
		return vertexShape != null ? vertexShape.getShape() : VertexShape.RECTANGLE.getShape();
	}
Handles the rendering of graphs for the {@link DefaultGraphDisplay}
Ghidra/Features/GraphServices/src/main/java/ghidra/graph/visualization/DefaultGraphRenderer.java