@Before
	public void setUp() throws Exception {

		// This has the four programs for the merge.
		fixupGUI();
		mtf = new MergeTestFacilitator();
		TestEnv testEnv = mtf.getTestEnvironment();
		testEnv.getTool().setToolName("TestTool");
	}
Test the Diff of thunk functions.
Ghidra/Features/Base/src/test.slow/java/ghidra/program/util/ExternalFunctionDiffTest.java