Rails 5.2 fetch_values for HashWithIndifferentAccess

Ruby 2.3 addedfetch_values method to hash. By using fetch_values we are able to get values for multiple keys in a hash. capitals = { usa: "Washington DC", china: "Beijing", india: "New Delhi", australia: "Canberra" }capitals.fetch_values(:usa, :india)#=> ["Washington DC", "New Delhi"]capitals.fetch_values(:usa, :spain) { |country| "N/A" }#=> ["Washington DC", "N/A"]Rails 5.2 introduces method fetc