public static void PrivateExpectNotNull(this object value) => ExpectPrivate.NotNull(value);
 public static void PrivateExpectNotNull(this object value, string message) => ExpectPrivate.NotNull(value, message);
 public static void PrivateAssertNotNull <T>(this T value) => ExpectPrivate.AssertNotNull(value);
 public static void PrivateExpectNotNull <TException>(this object value)
     where TException : Exception => ExpectPrivate.NotNull <TException>(value);
 public static void PrivateAssertNotNull <T>(this T value, string message) => ExpectPrivate.AssertNotNull(value, message);