code: function(settings) {
              return this.each(function() {
                  var $this = $(this);
                  $this.treegrid('setTreeContainer', settings.getTreeGridContainer.apply(this));
                  $this.treegrid('getChildNodes').treegrid('initNode', settings);
                  $this.treegrid('initExpander').treegrid('initIndent').treegrid('initEvents').treegrid('initState').treegrid('initChangeEvent').treegrid("initSettingsEvents");
              });
          }
docs: Initialize node
  
  @param {Object} settings
  @returns {Object[]}