public void mergeComments(CommentType commentType, Address originAddress) {
		Address resultAddress = originToResultTranslator.getAddress(originAddress);
		String resultComment = resultListing.getComment(commentType, resultAddress);
		String origComment = originListing.getComment(commentType, originAddress);
		String newComment = StringUtilities.mergeStrings(resultComment, origComment);
		resultListing.setComment(resultAddress, commentType, newComment);
	}
<CODE>mergeComments</CODE> merges the comment of the indicated
type in program1 with the comment in program2 at the specified address.
@param commentType comment type to merge (from CodeUnit class).
<br>EOL, PRE, POST, REPEATABLE, OR PLATE.
@param originAddress the address
This address should be derived from the origin program.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramMerge.java