public Set<FGVertex> getSelectedVertices() {
		if (!hasResults()) {
			return null;
		}
		return view.getSelectedVertices();
	}
Sets the message that will appear in the lower part of the graph.

@param message the message to display
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/mvc/FGController.java