protected JsonObject optionalHeaderData() {
		JsonObject optionalHeaderDataCopy;

		if (optionalHeaderData != null) {
			optionalHeaderDataCopy = optionalHeaderData.deepCopy();
		}
		else {
			optionalHeaderDataCopy = null;
		}

		return optionalHeaderDataCopy;
	}
Get a copy of the optional header data.

@return A copy of the JsonObject optional header data or null if unavailable.
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/cart/CartV1Header.java