Fix #395

pf4j/src/main/java/org/pf4j/ClassLoadingStrategy.java

@@ -61,7 +61,7 @@ public class ClassLoadingStrategy {
 
     private final List<Source> sources;
 
-    private ClassLoadingStrategy(List<Source> sources) {
+    public ClassLoadingStrategy(List<Source> sources) {
         this.sources = sources;
     }