Namespace Javax.Xml.Transform.Stax Classes StAXResult https://docs.oracle.com/en/java/javase/11/docs/api/java.xml/javax/xml/transform/stax/StAXResult.html StAXSource https://docs.oracle.com/en/java/javase/11/docs/api/java.xml/javax/xml/transform/stax/StAXSource.html