AuthZForce - XML Namespace Model. XML schema from http://www.w3.org/2001/xml.xsd and corresponding XJC episode that is useable for JAXB class generation from XSD importing xml.xsd.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window authzforce-xml-ns-model-1.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.