Simplify Region

BauSystem_Main/src/de/steamwar/bausystem/world/Region.java

@@ -230,21 +230,17 @@ public class Region {
     }
 
     public enum ExtensionDirection {
-
         PositiveZ("positivez", "z+"),
         NegativeZ("negativez", "z-"),
         PositiveX("positivex", "x+"),
         NegativeX("negativex", "x-");
 
         private Set<String> values;
-
         ExtensionDirection(String... values) {
             this.values = new HashSet<>(Arrays.asList(values));
         }
 
-        public static ExtensionDirection getByString(String value) {
-            if (value == null) return null;
-            value = value.toLowerCase();
+        private static ExtensionDirection getByString(String value) {
             for (ExtensionDirection extensionDirection : values()) {
                 if (extensionDirection.values.contains(value)) return extensionDirection;
             }
@@ -286,7 +282,7 @@ public class Region {
             offsetX = config.getInt("offsetX", 0);
             offsetY = config.getInt("offsetY", 0);
             offsetZ = config.getInt("offsetZ", 0);
-            extensionFrontDirection = ExtensionDirection.getByString(config.getString("extensionFrontDirection", null));
+            extensionFrontDirection = ExtensionDirection.getByString(config.getString("extensionFrontDirection", "").toLowerCase());
             extensionFront = config.getInt("extensionFront", 0);
             extensionBack = config.getInt("extensionBack", 0);
             extensionUp = config.getInt("extensionUp", 0);