@Test
	public void testGetBookmarkDifference8() throws Exception {
		// 0x1002323: p1 and p2 have same INFO bookmarks.
		programBuilder1.createBookmark("0x1002323", BookmarkType.INFO, "stuff", "My bookmark");
		programBuilder2.createBookmark("0x1002323", BookmarkType.INFO, "stuff", "My bookmark");

		programDiff = new ProgramDiff(p1, p2, new AddressSet(addr(0x1002323), addr(0x1002323)));
		AddressSet as = new AddressSet();
		programDiff.setFilter(new ProgramDiffFilter(ProgramDiffFilter.BOOKMARK_DIFFS));
		assertEquals(as, programDiff.getDifferences(programDiff.getFilter(), null));
	}
Test that ProgramDiff can determine the code unit differences between
Program1 and Program2 where Data Settings differ.
Ghidra/Features/Base/src/test.slow/java/ghidra/program/util/ProgramDiff1Test.java