StringRecord lookupString(long stringID) {
		StringRecord stringRecord = stringCache.get(stringID);
		if (stringRecord == null) {
			DBRecord record;
			try {
				record = table.getRecord(stringID);
				if (record != null) {
					stringRecord =
						new StringRecord(stringCache, stringID, record.getString(STRING_VALUE_COL));
				}
			}
			catch (IOException e) {
				throw new RuntimeException("serious delayed database access error", e);
			}
		}
		return stringRecord;
	}
Return existing String or null for long key stringID.
@param stringID the interned string primary key
@return the string record, or null if no such key
Ghidra/Features/FunctionID/src/main/java/ghidra/feature/fid/db/StringsTable.java