@Override
	protected void buildUi() {
		if (vertex == null) {
			return; // still being constructed
		}
		createPaints();
		super.buildUi();
	}
A vertex shape provider for the {@link FunctionCallGraphPlugin}.
Ghidra/Features/GraphFunctionCalls/src/main/java/functioncalls/graph/FcgVertexShapeProvider.java