Start Keycloak:
bin/standalone.sh
Open the Keycloak admin console, click on Add Realm, click on 'Choose a JSON file', selct example-realm.json and click Upload.
Deploy the Admin Client Example to Keycloak by running:
mvn install wildfly:deploy
Open the console at http://localhost:8080/examples-admin-client. The page should list all applications in the example realm, with a link to the applications that have a baseUrl configured.