(motive : Lean.Meta.RefinedDiscrTree.Key × Lean.Meta.RefinedDiscrTree.LazyEntry → Sort u_1) →
  (x : Lean.Meta.RefinedDiscrTree.Key × Lean.Meta.RefinedDiscrTree.LazyEntry) →
    ((key : Lean.Meta.RefinedDiscrTree.Key) → (entry : Lean.Meta.RefinedDiscrTree.LazyEntry) → motive (key, entry)) →
      motive x