public void Shall_parse_header()
 {
     Assert.That(AcceptEncodingHeader.TryParse("gzip;foo=bar", out AcceptEncodingHeader header), Is.True);
     Assert.That(header.Element, Is.EqualTo("gzip"));
     Assert.That(header.Parameters[0].Name, Is.EqualTo("foo"));
     Assert.That(header.Parameters[0].Value, Is.EqualTo("bar"));
 }