private FGEdge getCurrentEdge(FunctionGraph functionGraph, FGEdge edge) {
		FGVertex start = edge.getStart();
		FGVertex end = edge.getEnd();
		Address startAddress = start.getVertexAddress();
		Address endAddress = end.getVertexAddress();
		FGVertex v1 = functionGraph.getVertexForAddress(startAddress);
		FGVertex v2 = functionGraph.getVertexForAddress(endAddress);
		Graph<FGVertex, FGEdge> graph = functionGraph;
		return graph.findEdge(v1, v2);
	}
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