public void Decode_Utf8()
        {
            var utf8 = new UTF8Encoding(false, true);
            var text = "abc def baz aeiouy \u00E4\u00EB\u00EF\u00F6\u00FC\u00FB";
            var bytes = utf8.GetBytesWithPreamble(text);

            // Detect encoding should correctly pick UTF-8
            using (var stream = new MemoryStream(bytes))
            {
                var sourceText = EncodedStringText.Create(stream);
                Assert.Equal(text, sourceText.ToString());
                Assert.Equal(Encoding.UTF8.EncodingName, sourceText.Encoding.EncodingName);
                Assert.True(stream.CanRead);
            }
        }