code: function(className) {
        var library = this.getLibraryFromClassname(className);
        if (!library) {
          return null; 
        }
        var path = library.getRootDir() + "/" + library.getSourcePath() + "/" + className.replace(/\./g, "/") + ".js";
        return path;
      }
docs: Returns the classname
  @param className
  @returns {string}