protected void assertZoomedOut() {
		Double scale = getGraphScale(getPrimaryGraphViewer());
		assertTrue("Graph fully zoomed-in", scale < 1.0);
	}
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