{α : Type u} →
  {β : Type v} →
    [inst : BEq α] →
      [inst_1 : Hashable α] →
        {motive : Lean.PersistentHashMap α β → Sort u_1} →
          (t : Lean.PersistentHashMap α β) →
            ((root : Lean.PersistentHashMap.Node α β) → motive { root := root }) → motive t