docs: public ICompletableFuture<Map<K, Object>> submitToKeys(Set<K> keys, EntryProcessor entryProcessor) {
          checkNotNull(keys, NULL_KEYS_ARE_NOT_ALLOWED);
          if (keys.isEmpty()) {
              return new SimpleCompletedFuture<>(Collections.emptyMap());
          }
          handleHazelcastInstanceAwareParams(entryProcessor);
  
          Set<Data> dataKeys = createHashSet(keys.size());
          return submitToKeysInternal(keys, dataKeys, entryProcessor);
      }