class Steep::Interface::Params

def extract_keywords(args)
  last_arg = args.last
  keywords = {}
  rest = []
  if last_arg&.type == :hash
    last_arg.children.each do |element|
      case element.type
      when :pair
        if element.children[0].type == :sym
          name = element.children[0].children[0]
          keywords[name] = element.children[1]
        end
      when :kwsplat
        rest << element.children[0]
      end
    end
  end
  [keywords, rest]
end