text: function User(o) {
      var mSelf = this;
      o = o || {};
  
      mSelf.name = o.name || "";
  
      Object.defineProperty(mSelf, 'email', {
          enumerable: true,   // não enumerável
          get: function () { return o.email; }
      });
  
      mSelf.password = o.password || "";
  
      mSelf.save = function () {
          ManageUsers.save(mSelf);
      }
  }