import com.google.common.base.Preconditions;
import java.util.ArrayList;
import java.util.Collection;
-import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
private final Map<ActorRef, RegistrationTreeNode<ActorRef>> cohortToNode = new HashMap<>();
Collection<ActorRef> getCohortActors() {
- return Collections.unmodifiableCollection(cohortToNode.keySet());
+ return new ArrayList<>(cohortToNode.keySet());
}
@SuppressWarnings("checkstyle:IllegalCatch")