{α : Type} →
  (motive : ℕ → Lean.Meta.DiscrTree.Trie α → Sort u_1) →
    (x : ℕ) →
      (x_1 : Lean.Meta.DiscrTree.Trie α) →
        ((i : ℕ) →
            (vs : Array α) →
              (cs : Array (Lean.Meta.DiscrTree.Key × Lean.Meta.DiscrTree.Trie α)) →
                motive i (Lean.Meta.DiscrTree.Trie.node vs cs)) →
          motive x x_1