[keycloak-dev] Adding a custom protocolmapper

Hi, Is it at all possible to implement a custom protocolmapper that is deployable via /opt/jboss/keycloak/standalone/deployements ? If my class only implements ProtocolMapper, it works, but if it extends AbstractOIDCProtocolMapper (which in itself implements ProtocolMapper), my keycloak throws NoClassDefFound errors. This happens on both 4.0.0-beta1 and 4.0.0-beta2. Thanks, Thomas -- ir. Thomas Dupont Ghent University - imec IDLab, Office 200.010, 10th floor iGent Tower - Department of Information Technology Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium T: +32 9 33 14900 E: thomas.dupont(a)ugent.be W: idlab.ugent.be