public void appendComment(FieldContext<?> fieldContext, CommentType commentType, String prefix,
			String comment, String sep) throws IOException {
		DWARFUtil.appendComment(program, fieldContext.getAddress(), commentType, prefix, comment,
			sep);
	}
Adds a comment to the specified field, appending to any previous values
already there.  If the existing comment already contains the specified comment value,
the operation is skipped.

@param fieldContext the field
@param commentType {@link CommentType} enum 
@param prefix String prefix to place in front of the comment string
@param comment String value to append
@param sep separator to use between existing comments (for example, "\n")
@throws IOException if error adding comment
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/golang/structmapping/MarkupSession.java