dropChild method

@override void dropChild(RenderObject child)

Remove a child from this render object

Implementation

@override
void dropChild(RenderObject child) {
  if (!identical(_singleRenderObjectChild(this), child)) {
    throw StateError(
      'Child ${child.runtimeType} is not the single render child of '
      '$runtimeType.',
    );
  }
  setChild(null);
}