keycloak-examples-providers-parent org.keycloak 2.4.0.CR1-SNAPSHOT Authenticator Example 4.0.0 keycloak-examples-providers-rest jar org.keycloak keycloak-core provided org.keycloak keycloak-server-spi provided org.jboss.spec.javax.ws.rs jboss-jaxrs-api_2.0_spec hello-rest-example