∀ {declName : Lean.Name} {priority : ℕ} {keys : Array Lean.Meta.DiscrTree.Key} {declName_1 : Lean.Name} {priority_1 : ℕ}
  {keys_1 : Array Lean.Meta.DiscrTree.Key},
  { declName := declName, priority := priority, keys := keys } =
      { declName := declName_1, priority := priority_1, keys := keys_1 } →
    declName = declName_1 ∧ priority = priority_1 ∧ keys = keys_1