∀ {projName fieldName : Lean.Name} {lctx : Lean.LocalContext} {val : Lean.Expr} {stx : Lean.Syntax}
  {projName_1 fieldName_1 : Lean.Name} {lctx_1 : Lean.LocalContext} {val_1 : Lean.Expr} {stx_1 : Lean.Syntax},
  { projName := projName, fieldName := fieldName, lctx := lctx, val := val, stx := stx } =
      { projName := projName_1, fieldName := fieldName_1, lctx := lctx_1, val := val_1, stx := stx_1 } →
    projName = projName_1 ∧ fieldName = fieldName_1 ∧ lctx = lctx_1 ∧ val = val_1 ∧ stx = stx_1