@Override
	public String getString() {
		try {
			return fieldList.get(col++).getString();
		}
		catch (IndexOutOfBoundsException e) {
			throw new IllegalFieldAccessException();
		}
	}
Construct a read-only storage adapter from an
existing record.
@param rec data record
Ghidra/Framework/DB/src/main/java/db/ObjectStorageAdapterDB.java