@Override
	public String getDataRepresentation(ByteBlock block, BigInteger index)
			throws ByteBlockAccessException {
		long l = block.getLong(index);
		String str = Long.toHexString(l);
		return pad(str);
	}
Converts byte values to Long represented as an 8-byte/16--digit hex number.
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/format/HexLongFormatModel.java