[XML character entity references](https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references), e.g. `Å` ("Å"), and XML [numeric character references](https://en.wikipedia.org/wiki/Numeric_character_reference), e.g. `Å` ("Å"), are not unescaped/escaped by `XML.unescape` and `XML.escape` methods.