code: function (plugins, groups) {
  	var result = [],
  		i;
  	for (i in plugins) {
  		result.push( i );
  	}
  	for (i in groups) {
  		result.push( i );
  	}
  	return result;
  }
docs: /*!
  Get an list with all plugin and group names in tree
  @param  {Object} plugins tree.plugins
  @return {Array}         list of all plugins in tree