protected FGData triggerPersistenceAndReload(String functionAddress) {
		//
		// Ideally, we would like to save, close and re-open the program so that we can get
		// a round-trip saving and reloading.  However, in the test environment, we cannot save
		// our programs.  So, we will instead just navigate away from the current function, clear
		// the cache (to make sure that we read the settings again), and then verify that the
		// data saved in the program has been used to re-group.
		//
		String otherAddress = "0100415a";
		assertNotEquals(functionAddress, otherAddress);
		graphFunction(otherAddress);

		//
		// Graph the original function and make sure that the previously grouped nodes is again
		// grouped.
		//
		return graphFunction(functionAddress);
	}
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