I have been trying to gather option data using the lseg data python API for a few days in order to create pricing model on commodity options. However, I struggle a lot with the API, as I can't find ways to automate RIC gathering and option chains retrieval. Is there a way to get all option chains given a specific underlying ? YahooFinance API can do so in a few line using yf.Ticker(underlying).option_chains() and then specifying the maturity. Are there any way to do so on lseg's API and get implied vol, underlying level, option price, expiry and strike ?