    # File lib/action_controller/rack_lint_patch.rb, line 11
        def each_with_hack
          @closed = false

          @body.each { |part|
            assert("Body yielded non-string value #{part.inspect}") {
              part.kind_of?(String)
            }
            yield part
          }

          if @body.respond_to?(:to_path)
            assert("The file identified by body.to_path does not exist") {
              ::File.exist? @body.to_path
            }
          end
        end