1. DomName('PeriodicSyncManager.getRegistration')
  2. DocsEditable()
  3. Experimental()
Future getRegistration(String tag)

Source 

@DomName('PeriodicSyncManager.getRegistration')
@DocsEditable()
@Experimental() // untriaged
Future getRegistration(String tag) => convertNativePromiseToDartFuture(_blink.BlinkPeriodicSyncManager.instance.getRegistration_Callback_1_(this, tag));