finished importer for Rosenkeller

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.cal.app/src/main/java/de/srsoftware/cal/app/Application.java

@@ -1,23 +1,22 @@
 /* © SRSoftware 2024 */
 package de.srsoftware.cal.app;
 
-import de.srsoftware.cal.api.Appointment;
 import de.srsoftware.cal.importer.JenaRosenkeller;
-import de.srsoftware.tools.Payload;
-import java.io.IOException;
 
+/**
+ * Test application
+ */
 public class Application {
-	public static void main(String[] args) throws IOException {
+	private Application() {
+	}
+
+	/**
+	 * sandbox
+	 * @param args default
+	 */
+	public static void main(String[] args) {
 		var rosenkeller	 = new JenaRosenkeller();
 		var appointments = rosenkeller.fetch();
-		appointments.forEach(res -> {
-			System.out.printf("class: %s%n", res.getClass());
-			if (res instanceof Payload<Appointment> payload) {
-				System.out.printf("payload: %s%n", payload.get().getClass());
-				System.out.println(payload.get());
-			} else {
-				System.err.println(res);
-			}
-		});
+		appointments.forEach(System.err::println);
 	}
 }