If a SAX application needs to implement customized error handling,
it must implement this interface and then register an instance with the
SAX parser using the parser's XParser::setErrorhandler
method. The parser will then report all errors and warnings through this
interface.
This interface is a slight adaption of the Java interface
org.xml.sax.ErrorHandler. In IDL, no exception can be passed
as an argument, so an any serves as the container. The type of the
exception is SAXParseException or an instance of a derived class.