refactoring

src/main/java/de/etecture/ga/model/Garage.java

@@ -2,6 +2,7 @@ package de.etecture.ga.model;
 
 import java.time.Duration;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Set;
 
 import org.springframework.data.annotation.Id;
@@ -40,6 +41,10 @@ public class Garage {
 		}
 		return this;
 	}
+	
+	public List<Appointment> appointmentsSorted() {
+		return this.appointments.stream().sorted().toList();
+	}
 
 	public Garage addService(MDService service) {
 		garageServices.add(createGarageService(service, null));