message: Testing the push command
diff: @@ -58,18 +58,15 @@ using place_holder_type = float;
  template <typename StorageType, typename ArithmeticType,
  bool = std::is_same<StorageType, place_holder_type>::value &&
  !std::is_same<StorageType, ArithmeticType>::value>
  -struct helper_have_scale {
  -};
  +struct helper_have_scale {};
  template <typename StorageType, typename ArithmeticType>
  struct helper_have_scale<StorageType, ArithmeticType, false>
  - : public std::false_type {
  -};
  + : public std::false_type {};
  template <typename StorageType, typename ArithmeticType>
  struct helper_have_scale<StorageType, ArithmeticType, true>
  - : public std::true_type {
  -};
  + : public std::true_type {};
  } // namespace detail
  @@ -77,8 +74,7 @@ struct helper_have_scale<StorageType, ArithmeticType, true>
  template <typename StorageType, typename ArithmeticType,
  bool = detail::helper_have_scale<StorageType, ArithmeticType>::value>
  -class Accessor2dConst {
  -};
  +class Accessor2dConst {};
  /**
  * @internal
  *
  @@ -218,8 +214,7 @@ protected:
  template <typename StorageType, typename ArithmeticType,
  bool = detail::helper_have_scale<StorageType, ArithmeticType>::value>
  -class Accessor2d : public Accessor2dConst<StorageType, ArithmeticType> {
  -};
  +class Accessor2d : public Accessor2dConst<StorageType, ArithmeticType> {};
  /**
  @@ -351,8 +346,7 @@ public:
  template <typename ValueType, typename ValueTypeKrylovBases,
  bool = Accessor2d<ValueTypeKrylovBases, ValueType>::has_scale>
  -class Accessor2dHelper {
  -};
  +class Accessor2dHelper {};
  template <typename ValueType, typename ValueTypeKrylovBases>
  