LazyExtensionCompanion

Lazy extension companions should extend this trait, and return a new LazyExtension instance via instantiate.

These companions typically provide a materializer method like

implicit def init[H]: Wrapper[T] = macro initImpl

, where Wrapper is the wrapper type that this extension handles, and initImpl is provided by the LazyExtensionCompanion trait. This initializes the extension upon first use during a Lazy / Strict implicit search.