The render object of the first matching widget according to a depth-first pre-order traversal of the widget tree.
Throws a StateError if finder is empty.
- Use renderObject if you only expect to match one render object.
Source
RenderObject/*=T*/ firstRenderObject/*<T extends RenderObject>*/(Finder finder) {
TestAsyncUtils.guardSync();
return finder.evaluate().first.renderObject;
}