/**
* Called in <code>open</code>, <code>content</code> and <code>close</code> to pass the {@link Writable}s to the handler
* @param po
*/
private void Consume(IWorkerContext context, ProcessObject po)
{
if (po.ContainsWritable())
{
IWritable w = null;
while (null != (w = po.Poll()))
{
handler.Add(w);
}
}
}
