added new method to GetCandsetOperation

src/main/java/messif/operations/GetCandidateSetOperation.java

@@ -120,6 +120,18 @@ public class GetCandidateSetOperation extends AbstractOperation {
         }
     }
     
+    public boolean addLocators(Iterator<String> it, int limit) {
+        try {
+            int i = 0;
+            while (it.hasNext() && i ++ < limit) {
+                candidateSetLocators.add(it.next());
+            }
+            return true;
+        } catch (IllegalStateException ex) {
+            return false;
+        }
+    }
+    
     // ************************      Overrides     ******************************** //
     
     @Override