@Override
  public String toString() {
    return "CatchupStatusAdminResponse[ClientId=" + clientId + ", CorrelationId=" + correlationId + ", CaughtUp="
        + isCaughtUp + "]";
  }
@return {@code true} if replicas have caught up. {@code false} otherwise.
ambry-protocol/src/main/java/com/github/ambry/protocol/CatchupStatusAdminResponse.java