Major Description
ParsedField interface has "isValid" and "getParseException": from the DOM perspective a field should always be valid, shouldn't it? Shouldn't we throw exception during parsing instead of building the dom node with "isValid"/"getParseException" methods? Can you provide an use case where an exception/monitor during parsing is not enough and we need to carry the "invalidity" to the DOM?
(extracted from MIME4J-156 comments)