Improve API of RegionDataStore, RegionBackups.Backup

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/region/RegionBackups.java

@@ -54,14 +54,16 @@ public interface RegionBackups {
         @CheckReturnValue
         public abstract boolean load();
 
-        public abstract void delete();
-
         public abstract long getCreationTime();
 
         @Override
         public int compareTo(Backup o) {
             return Long.compare(getCreationTime(), o.getCreationTime());
         }
+
+        @SuppressWarnings("java:S3038") // This forces everybody to implement 'deleteRegion' for Backups!
+        @Override
+        public abstract void deleteRegion();
     }
 
     @CheckReturnValue

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/region/RegionData.java

@@ -41,12 +41,12 @@ public abstract class RegionData {
     protected RegionData(RegionDataStore store) {
         this.store = store;
         initialize();
-        store.loadRegionData(this);
+        store.loadRegion();
     }
 
     public final void setStore(RegionDataStore store) {
         this.store = store;
-        store.saveRegionData(this);
+        store.saveRegion();
     }
 
     protected void initialize() {
@@ -61,7 +61,7 @@ public abstract class RegionData {
     public final <T extends Enum<T> & Flag.Value<T>> boolean set(@NonNull Flag<T> flag, @NonNull T value) {
         if (has(flag).isWritable()) {
             if (flagMap.put(flag, value) != value) {
-                store.saveRegionData(this);
+                store.saveRegion();
                 return true;
             }
         }
@@ -80,7 +80,7 @@ public abstract class RegionData {
             }
         }
         properties.forEach(property -> property.set(null));
-        store.saveRegionData(this);
+        store.saveRegion();
     }
 
     public final Map<Flag<?>, Flag.Value<?>> getBackedMap() {
@@ -97,7 +97,7 @@ public abstract class RegionData {
 
     public final void setTestblockSchematic(SchematicNode schematic) {
         testblockSchematic.set(schematic);
-        store.saveRegionData(this);
+        store.saveRegion();
     }
 
     @Override

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/region/RegionDataStore.java

@@ -19,9 +19,9 @@
 
 package de.steamwar.bausystem.region;
 
-import lombok.NonNull;
-
 public interface RegionDataStore {
-    void saveRegionData(@NonNull RegionData regionData);
-    void loadRegionData(@NonNull RegionData regionData);
+    void saveRegion();
+    void loadRegion();
+    default void deleteRegion() {
+    }
 }