bonus concluded

src/main/java/org/model/Vehicle.java

@@ -21,12 +21,32 @@ public abstract class Vehicle {
     }
 
     // TODO: Create getters for all fields
+    public String getBrand() {
+        return brand;
+    }
+    public String getModel() {
+        return model;
+    }
+    public int getYear() {
+        return year;
+    }
+    public double getMileage() {
+        return mileage;
+    }
 
     // TODO: Implement addMileage(double km)
+    public void addMileage(double km){
+        if(km<0){
+            System.out.println("error");
+            return;
+        }
+        this.mileage+=km;
+    }
     // If km is negative → print error
     // Otherwise increase mileage
 
     // TODO: Declare abstract method getEnergyType()
+    public abstract String getEnergyType();
 
     public void basicInfo() {
         System.out.println(