@Override
    public void fromData(DataInput in,
        DeserializationContext context) throws IOException, ClassNotFoundException {
      super.fromData(in, context);
      seriesNum = in.readInt();
      msgNum = in.readInt();
      numSeries = in.readInt();
      lastInSeries = in.readBoolean();
      chunk = DataSerializer.readByteArray(in);
    }
Processes this message. This method is invoked by the receiver of the message.

@param dm the distribution manager that is processing the message.
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/FetchKeysMessage.java