/** {@inheritDoc} */
 @Override
 public String toString() {
   return S.toString(
       GridNearAtomicUpdateRequest.class,
       this,
       "filter",
       Arrays.toString(filter),
       "parent",
       super.toString());
 }
 /** {@inheritDoc} */
 @Override
 public Collection<UUID> masterNodeIds() {
   return Arrays.asList(nodeId, nearNodeId);
 }