docs: function handleHasOptions(key) {
        if (key.indexOf(',') < 0) return key;
  
        var p = key.split(',');
        key = p.shift();
        var optionsString = p.join(',');
        optionsString = this.interpolate(optionsString, clonedOptions);
        optionsString = optionsString.replace(/'/g, '"');
  
        try {
          clonedOptions = JSON.parse(optionsString);
        } catch (e) {
          this.logger.error('failed parsing options string in nesting for key ' + key, e);
        }
  
        return key;
      }