new

# File actionpack/lib/action_dispatch/routing/mapper.rb, line 1559
        def new
          unless resource_scope?
            raise ArgumentError, "can't use new outside resource(s) scope"
          end

          with_scope_level(:new) do
            path_scope(parent_resource.new_scope(action_path(:new))) do
              yield
            end
          end
        end