Improve YMLWrapper

CommonCore/Data/src/de/steamwar/data/YMLWrapper.java

@@ -25,6 +25,7 @@ import java.io.File;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -55,13 +56,23 @@ public abstract class YMLWrapper<M, ST, W> {
 
     public abstract String getDefaultGameName();
 
-    public abstract String getString(String path, String defaultValue);
+    public abstract <T> T get(String path, T defaultValue, Function<Object, T> mapper);
 
-    public abstract int getInt(String path, int defaultValue);
+    public String getString(String path, String defaultValue) {
+        return get(path, defaultValue, Objects::toString);
+    }
 
-    public abstract double getDouble(String path, double defaultValue);
+    public int getInt(String path, int defaultValue) {
+        return get(path, defaultValue, Integer.class::cast);
+    }
 
-    public abstract boolean getBoolean(String path, boolean defaultValue);
+    public double getDouble(String path, double defaultValue) {
+        return get(path, defaultValue, Double.class::cast);
+    }
+
+    public boolean getBoolean(String path, boolean defaultValue) {
+        return get(path, defaultValue, Boolean.class::cast);
+    }
 
     public final ST getSchematicType(String path, String defaultValue) {
         String schematicType = getString(path, defaultValue);