有办法获取ETF”跟踪标的“的指数吗？

举个例子，515790的跟踪标的是：”中证光伏产业指数“。这个指数的代码是：931151。
http://fundf10.eastmoney.com/jbgk_515790.html

上面这个网页好像没有发用东财api获取 跟踪标的（”中证光伏产业指数“）这个值。
更没办法找到这个指数的代码931151。

Start by locating the ETF and fund-data retrieval entry points in efinance, then inspect the Eastmoney page and API behavior for fund 515790. Confirm whether the underlying index name and code can be obtained reliably; done means the library exposes both “中证光伏产业指数” and 931151 for this ETF, with relevant coverage checked.

Written by the indexing model from the issue text.