Source
ShadowRoot createShadowRoot([Map shadowRootInitDict]) { if (shadowRootInitDict == null) { return _blink.BlinkElement.instance.createShadowRoot_Callback_0_(this); } if ((shadowRootInitDict is Map)) { return _blink.BlinkElement.instance.createShadowRoot_Callback_1_(this, convertDartToNative_Dictionary(shadowRootInitDict)); } throw new ArgumentError("Incorrect number or type of arguments"); }