@Override
  public CheckAndMutateResult checkAndMutate(CheckAndMutate checkAndMutate) throws IOException {
    return FutureUtils.get(table.checkAndMutate(checkAndMutate));
  }
The table implementation based on {@link AsyncTable}.
hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableOverAsyncTable.java