RenderObjectWidget documentation recommends subclassing SingleChildRenderObjectElement #150597
Description
The documentation for RenderObjectWidget recommends subclassing SingleChildRenderObjectElement where it means to recommend subclassing SingleChildRenderObjectWidget.
/// [RenderObjectWidget]s provide the configuration for [RenderObjectElement]s,
/// which wrap [RenderObject]s, which provide the actual rendering of the
/// application.
///
/// Usually, rather than subclassing [RenderObjectWidget] directly, render
/// object widgets subclass one of:
///
/// * [LeafRenderObjectWidget], if the widget has no children.
/// * [SingleChildRenderObjectElement], if the widget has exactly one child.
/// * [MultiChildRenderObjectWidget], if the widget takes a list of children.
/// * [SlottedMultiChildRenderObjectWidget], if the widget organizes its
/// children in different named slots.
///
/// Subclasses must implement [createRenderObject] and [updateRenderObject].
abstract class RenderObjectWidget extends Widget {