∀ {α : Type} (vs : Array α) (children : Array (Lean.Meta.DiscrTree.Key × Lean.Meta.DiscrTree.Trie α)) (vs_1 : Array α)
  (children_1 : Array (Lean.Meta.DiscrTree.Key × Lean.Meta.DiscrTree.Trie α)),
  (Lean.Meta.DiscrTree.Trie.node vs children = Lean.Meta.DiscrTree.Trie.node vs_1 children_1) =
    (vs = vs_1 ∧ children = children_1)