tags_api.get_discussions_by_feed - select_tags and filter_tags do not work

I have been trying to be able to show posts in communities by people i follow. tags_api.get_discussions_by_feed should handle this but the filters and select params do not work

For example

curl -s --data '{"jsonrpc":"2.0", "method":"tags_api.get_discussions_by_feed", "params":{"tag":"markangeltrueman","limit":1, "select_tags":"hive-174578"}, "id":1}' https://anyx.io

returns

{ "error": { "code": -32602, "data": "too many keyword arguments {'select_tags': 'hive-174578'}", "message": "Invalid parameters" }, "id": 1, "jsonrpc": "2.0" }

and

curl -s --data '{"jsonrpc":"2.0", "method":"tags_api.get_discussions_by_feed", "params":{"tag":"markangeltrueman","limit":1, "filter_tags":"hive-174578"}, "id":1}' https://anyx.io

returns

{ "error": { "code": -32602, "data": "filter_tags not supported", "message": "Invalid parameters" }, "id": 1, "jsonrpc": "2.0" }

This would be a really useful fix, especially as communities grow as I can see apps wanting to show feeds just for people they are following in certain communities.