∀ {lctx : Lean.LocalContext} {stx output : Lean.Syntax} {lctx_1 : Lean.LocalContext} {stx_1 output_1 : Lean.Syntax},
  { lctx := lctx, stx := stx, output := output } = { lctx := lctx_1, stx := stx_1, output := output_1 } →
    lctx = lctx_1 ∧ stx = stx_1 ∧ output = output_1