/** {@inheritDoc} */
  @Override
  public void writeExternal(ObjectOutput out) throws IOException {
    out.writeBoolean(depEnabled);

    if (depEnabled) {
      U.writeByteArray(out, topicBytes);
      U.writeByteArray(out, predBytes);
      U.writeString(out, clsName);
      out.writeObject(depInfo);
    } else {
      out.writeObject(topic);
      out.writeObject(pred);
    }
  }
  /** {@inheritDoc} */
  @Override
  public void writeExternal(ObjectOutput out) throws IOException {
    U.writeByteArray(out, src);

    out.writeInt(depMode.ordinal());

    U.writeGridUuid(out, clsLdrId);
    U.writeString(out, srcClsName);
    U.writeString(out, userVer);
    U.writeMap(out, ldrParties);
  }