@Override
  public boolean isCommittable() {
    return (availableForNext || hasNoMore) && size() == 1;
  }
The {@code SubscriptionEventTabletResponse} class extends {@link
SubscriptionEventExtendableResponse} to handle subscription responses specifically for tablet
data. The actual payload of the response includes a {@link TabletsPayload}, which contains the
tablet information being processed.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/subscription/event/response/SubscriptionEventTabletResponse.java