public void setFocusedVertex(AttributedVertex vertex) {
		setFocusedVertex(vertex, EventTrigger.API_CALL);
	}
Gather all source and target vertices until there are no more available.
@return all the vertices in the component(s) of the selected vertices
Ghidra/Features/GraphServices/src/main/java/ghidra/graph/visualization/DefaultGraphDisplay.java