public AzureBlob(GenericFile file)
        {
            Guard.ArgumentIsNotNull(file, nameof(file));

            FileName = file.FileName;
            Stream = file.Stream;
        }
        public void Map_ShouldMapTheProperties(
            string fileName,
            Stream stream)
        {
            // Arrange and act

            using (var genericFile = new GenericFile(fileName, stream))
            {
                // Assert

                genericFile.FileName.Should().Be(fileName);
                genericFile.Stream.Should().Be(stream);
            }
        }