public void Should_Return_Expiration_Time()
            {
                // Given
                ZumoJwtUtility sut = new ZumoJwtUtility();

                // When
                var result = sut.GetTokenExpiration <TestJwt>(JwtString);

                // Then
                result.Should().Be(Convert.ToDateTime("1/1/1970 4:10:00 AM"));
            }
            public void Should_Return_Expiration()
            {
                // Given
                ZumoJwtUtility sut = new ZumoJwtUtility();

                // When
                var result = sut.GetTokenExpiration <TestJwt>(JwtString);

                // Then
                result.Should().NotBeNull();
            }