XML::Elemental::SAXHandler is a subclass of
XML::SAX::Base that is passed into the parser factory to
create the Elemental parser.
This handler implements SAX handlers for start_document,
start_element, characters, end_element and end_document. It
also handles mixing the document, element and characters
into the processing of XML data through its overwritten construvtor.
You typically do not need to work with this module directly.
Instead work with the parser method in XML::Elemental.