code: function() {
      this.creationTime = undefined;
      this.lastModTime = undefined;
      this.lastAccessTime = undefined;
      this.expiryTime = undefined;
      this.expires = undefined;
      this.usageCount = undefined;
      this.locationChanged = new Date();
      Object.preventExtensions(this);
  }
docs: Kdbx times
  @constructor