@Override
			public void modifyLatest(ProgramDB program) {
				Listing listing = program.getListing();
				CodeUnit cu;
				cu = listing.getCodeUnitAt(addr(program, "0x1008606"));
				cu.setComment(CommentType.EOL, "Latest EOL Comment");
				cu.setComment(CommentType.PRE, "Latest Pre Comment");
				cu.setComment(CommentType.POST, "Latest Post Comment");
				cu.setComment(CommentType.PLATE, "Latest Plate Comment");
				cu.setComment(CommentType.REPEATABLE, "Latest Repeatable Comment");
				cu = listing.getCodeUnitAt(addr(program, "0x1008607"));
				cu.setComment(CommentType.EOL, "Latest EOL Comment");
				cu.setComment(CommentType.PRE, "Latest Pre Comment");
				cu.setComment(CommentType.POST, "Latest Post Comment");
				cu.setComment(CommentType.PLATE, "Latest Plate Comment");
				cu.setComment(CommentType.REPEATABLE, "Latest Repeatable Comment");
				cu = listing.getCodeUnitAt(addr(program, "0x1008608"));
				cu.setComment(CommentType.EOL, "Latest EOL Comment");
				cu.setComment(CommentType.PRE, "Latest Pre Comment");
				cu.setComment(CommentType.POST, "Latest Post Comment");
				cu.setComment(CommentType.PLATE, "Latest Plate Comment");
				cu.setComment(CommentType.REPEATABLE, "Latest Repeatable Comment");
			}
Test the merge of the versioned program's listing.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/listing/CommentMergeManager2Test.java