code: function (elm, styles) {
          elm = this.$$(elm).css(styles);
  
          if (this.settings.update_styles) {
            updateInternalStyleAttr(this, elm);
          }
        }
docs: Sets multiple styles on the specified element(s).
  
  @method setStyles
  @param {Element/String/Array} elm DOM element, element id string or array of elements/ids to set styles on.
  @param {Object} styles Name/Value collection of style items to add to the element(s).
  @example
  // Sets styles on all paragraphs in the currently active editor
  tinymce.activeEditor.dom.setStyles(tinymce.activeEditor.dom.select('p'), {'background-color': 'red', 'color': 'green'});
  
  // Sets styles to an element by id in the current document
  tinymce.DOM.setStyles('mydiv', {'background-color': 'red', 'color': 'green'});