Using retrieval schemas in custom widgets

Hi everyone, In release note of Mx7.11, there is: Custom widgets can now specify retrieval schemas for XPath queries. We fixed the parsing of references in such schemas. (Ticket 58704) However, i cannot find any further information/examples on the Api documentation. Does anyone know more about this feature and its implication? Best regards,
1 answers

After reviewing the ticket, I believe this is in reference to the filter.references and filter.attributes options of, referenced here: