ProcessSelect() private method

private ProcessSelect ( ) : SelectNodeList
return SelectNodeList
 public void SelectParse1()
 {
     XElement el = XElement.Parse(@"<f>select [System.Id], [Phoenix.DueDate], [Phoenix.MagicDueDate], [System.WorkItemType], [System.State], [System.Title], [System.IterationPath]
     from WorkItems
     where ([System.State] = 'New'
     or [System.State] = 'Active')
     and ([System.AssignedTo] = 'Ventsislav Mladenov' or [System.TeamProject] = @project)
     order by [System.Id]</f>");
     var parser = new LexalParser(el.Value);
     var nodes = parser.ProcessSelect();
     Console.WriteLine(nodes);
     Assert.AreEqual("[System.Id], [Phoenix.DueDate], [Phoenix.MagicDueDate], [System.WorkItemType], [System.State], [System.Title], [System.IterationPath]", nodes.ToString());
 }
 public List<string> GetSelectColumns()
 {
     var parser = new LexalParser(this.QueryText);
     return parser.ProcessSelect().Select(x => x.ColumnName).ToList();
 }