code: @Override
      public void removeAll(Collection keys) {
          if (keys == null || keys.isEmpty()) {
              return;
          }
          final List<Object> objectKeys = convertToObjectKeys(keys);
          getStore().deleteAll(objectKeys);
      }
docs: {@inheritDoc}
  
  Directly removes keys from map store as in write-through mode.
  It works same for write-behind and write-through stores.