//! [0]
xml =QXmlStreamReader()...while not xml.atEnd():
xml.readNext();...# do processingif xml.hasError():...# do error handling//! [0]//! [1]writeStartElement(qualifiedName)writeCharacters(text)writeEndElement()//! [1]//! [2]writeStartElement(namespaceUri, name)writeCharacters(text)writeEndElement()//! [2]