Provide a builder pattern interface to the construction layout tree

What problem does this solve or what need does it fill?

Provides a more compact, write-friendly, ergonomic interface

What solution would you like?

@LayoutSpec
public class PlaygroundComponentSpec {
  @OnCreateLayout
  static Component onCreateLayout(ComponentContext c) {
    return Row.create(c)
      .child(
        Row.create(c)
          .widthDip(100)
          .heightDip(100))
      .child(
        Row.create(c)
          .widthDip(100)
          .heightDip(100)
          .marginDip(YogaEdge.HORIZONTAL, 20)
          .flexGrow(1))
      .child(
        Row.create(c)
          .widthDip(100)
          .heightDip(100))
      .widthDip(500)
      .heightDip(500)
      .alignItems(YogaAlign.FLEX_START)
      .paddingDip(YogaEdge.ALL, 20)
      .build();
  }
}

What alternative(s) have you considered?

Since many anonymous nodes are used, a method of result feedback is needed, such as having the node save a callback function, or a Trait that provides result feedback

Additional context

The sample code comes from the Yoga home page, a Java package called litho. But it can be translated quite directly to Rust code.