setChild method

@override void setChild(RenderObject? child)

Replace this object's single render child.

Reassigning the current child is a no-op.

Implementation

@override
void setChild(RenderObject? child) {
  if (child != null && child is! RenderBox) {
    throw ArgumentError(
      'RenderProxyBox children must be RenderBox, got ${child.runtimeType}',
    );
  }
  setSingleRenderObjectChild(this, child);
}