getEndianness function
Implementation
Endian? getEndianness(ByteData byteData, [int offset = 0]) {
var syncBE = byteData.getUint16(offset, Endian.big);
if (syncBE == SYNC_NUMBER) return Endian.big;
if (syncBE == SYNC_NUMBER_REVERSED) return Endian.little;
return null;
}