@Override
	public FieldLocation getFieldLocation(ListingField bf, BigInteger index, int fieldNum,
			ProgramLocation programLoc) {
		if (!(programLoc instanceof CommentFieldLocation)) {
			return null;
		}

		CommentFieldLocation loc = (CommentFieldLocation) programLoc;
		if (loc.getCommentType() != CommentType.PRE) {
			return null;
		}
		return new FieldLocation(index, fieldNum, loc.getRow(), loc.getCharOffset());
	}
Constructor
@param model the model that the field belongs to.
@param hlProvider the HightLightStringProvider.
@param displayOptions the Options for display properties.
@param fieldOptions the Options for field specific properties.
Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/field/PreCommentFieldFactory.java