code: function(font){
          var me = this;
          if(me.font !== font){
              me.font = font;
              me._fontHeight = Text.measureFontHeight(font);
          }
  
          return me;
      }
docs: read-only 
  @language=en
  Set text CSS font style.
  @param {String} font Text CSS font style to set.
  @returns {Text} the Text object, chained call supported.