{motive_1 : Lean.Server.Test.Runner.Client.HighlightedMsgEmbed → Sort u} →
  (t : Lean.Server.Test.Runner.Client.HighlightedMsgEmbed) →
    t.ctorIdx = 2 →
      ((wi : Lean.Server.Test.Runner.Client.WidgetInstance) →
          (alt : Lean.Widget.TaggedText Lean.Server.Test.Runner.Client.HighlightedMsgEmbed) →
            motive_1 (Lean.Server.Test.Runner.Client.HighlightedMsgEmbed.widget wi alt)) →
        motive_1 t