adoptChildRenderObject method

@override void adoptChildRenderObject(RenderBox child, Element childElement, int slot)

Adopt child onto this element's render object at slot (document order). Subclasses override to attach extra metadata such as flex factors.

Implementation

@override
void adoptChildRenderObject(RenderBox child, Element childElement, int slot) {
  final renderFlex = renderObject! as RenderFlex;
  final metadata = _resolveFlexMetadata(childElement);
  renderFlex.add(child, flex: metadata.flex, fit: metadata.fit);
}