pageUp method
Scrolls the contents of this WebView up by half the view size.
Returns true if the page was scrolled.
bottom true to jump to the top of the page.
Official Android API: https://developer.android.com/reference/android/webkit/WebView#pageUp(boolean)
Implementation
Future<bool> pageUp({required bool top}) async {
Map<String, dynamic> args = <String, dynamic>{};
args.putIfAbsent("top", () => top);
return await _channel.invokeMethod('pageUp', args);
}