@Test
	public void testGetBookmarkDifference4() throws Exception {
		// 0x100230d: p2 has bookmark, p1 doesn't.
		programBuilder2.createBookmark("0x100230d", BookmarkType.INFO, "", "My bookmark");

		AddressSet checkAddressSet = new AddressSet(addr(0x1002306), addr(0x100232f));
		AddressSet expectedDiffs = new AddressSet(addr(0x100230d), addr(0x1002311));
		checkDiff(checkAddressSet, expectedDiffs, ProgramDiffFilter.BOOKMARK_DIFFS);
	}
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