private Set<E> getForwardScopedFlowEdgesForVertexAsync(V v) {
		if (v == null) {
			return null;
		}

		Set<E> flowEdges = forwardScopedFlowEdgeCache.get(v);
		if (flowEdges == null) {
			flowEdges = findForwardScopedFlowAsync(v);
			forwardScopedFlowEdgeCache.put(v, flowEdges);
		}
		return Collections.unmodifiableSet(flowEdges);
	}
Signals to this path highlighter that it should stop all background jobs
Ghidra/Framework/Graph/src/main/java/ghidra/graph/viewer/edge/VisualGraphPathHighlighter.java