class ObjectSource extends BaseNode implements
    Externalizable {

    public void addObjectSink(final ObjectSink objectSink) {
        this.sink = this.sink.addObjectSink( objectSink, this.alphaNodeHashingThreshold );
    }

    public  ObjectSource();
    protected  ObjectSource(final int id,
                 final RuleBasePartitionId partitionId,
                 final boolean partitionsEnabled);
      ObjectSource(final int id,
                 final RuleBasePartitionId partitionId,
                 final boolean partitionsEnabled,
                 final ObjectSource objectSource,
                 final int alphaNodeHashingThreshold);

}