Added annotation on the method, not the type for ManyCore.

org.sat4j.core/src/main/java/org/sat4j/tools/ManyCore.java

@@ -606,6 +606,8 @@ public class ManyCore<S extends ISolver> implements ISolver, OutcomeListener,
         sharedUnitClauses.push(LiteralsUtils.toInternal(p));
     }
 
+    @Override
+    @Feature(value = "unitclauseprovider", parent = "expert")
     public synchronized void provideUnitClauses(UnitPropagationListener upl) {
         for (int i = 0; i < sharedUnitClauses.size(); i++) {
             upl.enqueue(sharedUnitClauses.get(i));