@Before
	public void setUp() throws Exception {

		ToyProgramBuilder builder = new ToyProgramBuilder("notepad", true);
		builder.addCategory(new CategoryPath(CategoryPath.ROOT, "Category1"));
		program = builder.getProgram();

		env = new TestEnv();
		tool = env.showTool(program);
		tool.addPlugin(DataTypeManagerPlugin.class.getName());
		plugin = getPlugin(tool, DataTypeManagerPlugin.class);
	}
{@link AbstractEnumEditorUndoRedoTest} contains tests which should be applied to the various 
{@link DataTypeManager} implementations which are responsible for setting {@code dtm} during
the setUp phase.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/datamgr/editor/AbstractEnumEditorUndoRedoTest.java