docs: function(name) {
          if (!this.has(name)) return false;
  
          var eClass = this.eClass;
          if (!eClass) return false;
  
          var value = this.get(name);
          if (value instanceof EList) {
              return value.size() > 0;
          } else {
              return value !== null && typeof value !== 'undefined';
          }
      }