∀ {preferred : Bool} {insertIdx : ℕ} {a : Lean.Syntax.Stack} {preferred_1 : Bool} {insertIdx_1 : ℕ}
  {a_1 : Lean.Syntax.Stack},
  Lean.CodeAction.FindTacticResult.tacticSeq preferred insertIdx a =
      Lean.CodeAction.FindTacticResult.tacticSeq preferred_1 insertIdx_1 a_1 →
    preferred = preferred_1 ∧ insertIdx = insertIdx_1 ∧ a = a_1