private DockingActionIf getRegroupAction(final FGVertex vertex) {
		final AtomicReference<DockingActionIf> reference = new AtomicReference<>();
		runSwing(() -> {
			JComponent component = vertex.getComponent();
			final GenericHeader header =
				(GenericHeader) getInstanceField("genericHeader", component);
			reference.set(header.getAction("Regroup Vertices"));
		});
		return reference.get();
	}
Finds an edge that represents the given edge, which may no longer exist with
the same (==) edge instances.
Ghidra/Features/FunctionGraph/src/test.slow/java/ghidra/app/plugin/core/functiongraph/AbstractFunctionGraphTest.java