AuthZForce Community Edition - Parent project to 'commons' artifacts, i.e. artifacts reusable beyond the scope of AuthZForce, such as XML schemas from standards or open specifications in general.
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-ce-commons-parent-3.3.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.