changed public to private

src/main/java/eu/gaiax/sdcreationwizard/api/ConversionService.java

@@ -63,7 +63,7 @@ public class ConversionService {
         return new ShaclModel(prefixList, shapesSorted);
     }
 
-    public static int calculateDepth(VicShape shape, List<VicShape> shapes, Map<VicShape, Integer> visitedShapes) {
+    private static int calculateDepth(VicShape shape, List<VicShape> shapes, Map<VicShape, Integer> visitedShapes) {
         if (visitedShapes.containsKey(shape)) {
             return visitedShapes.get(shape);
         }