text: 
  /**
   * Bucket constructor
   */
  var Bucket = function Bucket(featureMap, index, callback) {
      this.featureMap = featureMap;
      this.index = index;
      this.callback = typeof callback === 'function' ? callback : function() {};
  };
  
  /**
   * Check if a behavior is enabled for a particular context/bucket combination
   *
   * @param Behavior behavior
   * @return boolean
   */
  Bucket.prototype.enabled = function enabled(behavior) {
      var slug = behavior.slug;
      if (!this.featureMap.slugExists(slug)) {
          this.callback(slug);
      }
      return this.featureMap.enabled(slug, this.index);
  };
  