@Override
  public List<CompletableFuture<CheckAndMutateResult>>
    checkAndMutate(List<CheckAndMutate> checkAndMutates) {
    final Supplier<Span> supplier = newTableOperationSpanBuilder().setOperation(checkAndMutates)
      .setContainerOperations(checkAndMutates);
    return tracedFutures(() -> batch(checkAndMutates, rpcTimeoutNs).stream()
      .map(f -> f.thenApply(r -> (CheckAndMutateResult) r)).collect(toList()), supplier);
  }
The implementation of RawAsyncTable.
<p/>
The word 'Raw' means that this is a low level class. The returned {@link CompletableFuture} will
be finished inside the rpc framework thread, which means that the callbacks registered to the
{@link CompletableFuture} will also be executed inside the rpc framework thread. So users who use
this class should not try to do time consuming tasks in the callbacks.
@since 2.0.0
@see AsyncTableImpl
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncTableImpl.java