SWTBotTreeItem[] items =  bot.tree().getAllItems();
 for(SWTBotTreeItem ii : items )
  {  
     if(ii.select().cell(1).toString().equals("File"))
         {
          ii.select().click(5);
          SWTBotText text = bot.text();
          text.setText("NEw TExt"); // set the text
         }       
      if(ii.select().cell(1).toString().equals("MessageType"))
         {
          ii.select().click(5);
          SWTBotText text = bot.text();
          text.setText("NExt TExt"); // set the text
                 
         }
   }