mvc_layer_response_mixin.rb

        lambda {
          string_or_symbol = lambda { |arg| arg.kind_of?(String) || arg.kind_of?(Symbol) }
          Waves::ResponseMixin.module_eval do
            [ :models, :controllers, :views, :helpers ].each do |k|
              functor( k ) { app[ k ] }
              functor( k, string_or_symbol ) { |name| app( name )[ k ] }
            end
          end
        }.call