docs: function(helpers, options) {
        if (typeof helpers === 'object') {
          this.visit('helper', helpers);
          return this;
        }
  
        if (lazy.isGlob(helpers)) {
          this.loader('helpers-glob', ['base-glob'], function (files) {
            return files.map(function (fp) {
              return require(path.resolve(fp));
            });
          });
  
          var res = this.compose('helpers-glob')(helpers, options);
          this.visit('helper', res);
          return this;
        }
  
        if (typeof helpers === 'string') {
          console.log('loading helpers from a string is not implemented yet.');
        }
        return this;
      }