public void PrettyPrintQueryGraph()
		{
			var visitor = new DslPrettyPrintVisitor(new ConnectionSettings());
			var query = NewQuery(q =>
				q.Filtered(qf => qf
					.Filter(qff => qff
						.And(
							ff => ff.Term("term", "value"),
							ff => ff.Term("term1", "value2"),
							ff => ff.Term("3erm1", "value2")
						)
					)
				)
				&& q.Term("term2", "asd")
				|| q.Prefix(p=>p.Content, "prefix")
			);
			query.Accept(visitor);
			/* visitor.PrettyPrint will hold:
			 * 
			 * query: bool ()
			 *  should: bool ()
			 *    must: filtered ()
			 *      filter: and ()
			 *        filter: term (field: term)
			 *        filter: term (field: term1)
			 *        filter: term (field: 3erm1)
			 *    must: term (field: term2)
			 *  should: prefix (field: content)
			 */
			Assert.Pass(visitor.PrettyPrint);
		}