Has been removed in Rails 6.1

> In Ruby 2, keyword arguments can be treated as the last positional Hash argument and a last positional Hash argument can be treated as keyword arguments.

https://www.ruby-lang.org/en/news/2019/12/12/separation-of-positional-and-keyword-arguments-in-ruby-3-0/