public byte[] ToLittleEndianByteArray()
{
var bits = new Bits(20);
bits.AddOffBit();
bits.AddOffBit();
bits.AddBits(Type.Bits);
var length = (ushort)(Attributes.Count() * 4 * 8);
bits.AddUInt16LittleEndian(length);
bits.AddUInt32LittleEndian(MagicCookie);
bits.AddBytesLittleEndian(Id.Bytes);
return bits.ToLittleEndianByteArray();
}