path_for_action

# File actionpack/lib/action_dispatch/routing/mapper.rb, line 1816
          def path_for_action(action, path)
            return "#{@scope[:path]}/#{path}" if path

            if canonical_action?(action)
              @scope[:path].to_s
            else
              "#{@scope[:path]}/#{action_path(action)}"
            end
          end