/// This decode-only encoding uses 16-bit code units due to Unicode originally
/// having been designed as a 16-bit reportoire. In the absence of a byte order
/// mark the big endian byte order is assumed.
///
/// There is no corresponding encoder in this crate or in the Encoding
/// Standard. The output encoding of this encoding is UTF-8.
///
/// This encoding matches the Windows code page 1201.
