UTF32 returns a UTF-32 Encoding for the given default endianness and byte order mark (BOM) policy.

BigEndian is UTF-32BE.

ExpectBOM means that the UTF-32 form must start with a byte order mark, which will be used to override the default encoding.

IgnoreBOM means to ignore any byte order marks.

LittleEndian is UTF-32LE.

UseBOM means that the UTF-32 form may start with a byte order mark, which will be used to override the default encoding.

All lists a configuration for each IANA-defined UTF-32 variant.

ErrMissingBOM means that decoding UTF-32 input with ExpectBOM did not find a starting byte order mark.

BOMPolicy is a UTF-32 encodings's byte order mark policy.

Endianness is a UTF-32 encoding's default endianness.