toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (bookmark != null) 'bookmark': bookmark!,
if (bookmarkId != null) 'bookmarkId': bookmarkId!,
if (heading != null) 'heading': heading!,
if (headingId != null) 'headingId': headingId!,
if (tabId != null) 'tabId': tabId!,
if (url != null) 'url': url!,
};