adding documents to a secured solr server.

[Phil Scadden]

Solrj QueryRequest object has a method to set basic authorization 
username/password but what is the equivalent way to pass authorization when you 
are adding new documents to an index?
       ConcurrentUpdateSolrClient solr = new 
ConcurrentUpdateSolrClient(solrProperties.getServer(),10,2);
...
             up.addField("id","myid");
             up.addField("title",title);
             up.addField("author",author);
             String content = textHandler.toString();
             up.addField("_text_",content);
             solr.add(up);
             solr.commit();

I cant see where authorization occurs?

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