code: function() {
              var tree = $(this).treegrid('getTreeContainer');
              if (tree.data('first_init') === undefined) {
                  tree.data('first_init', $.cookie(tree.treegrid('getSetting', 'saveStateName')) === undefined);
              }
              return tree.data('first_init');
          }
docs: Return true if this tree was never been initialised
  
  @returns {Boolean}