@Test
	public void testGetCommentDifference20() throws Exception {
		// 0x100248f: p2 has function comment.
		programBuilder2.createFunctionComment("0x100248f", "Other function comment.");

		checkCommentDifference(0x100248f);
	}
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