# File htree/inspect.rb, line 16
    def pretty_print(q)
      if @empty
        q.group(1, '{emptyelem', '}') {
          q.breakable; q.pp @stag
        }
      else
        q.group(1, "{elem", "}") {
          q.breakable; q.pp @stag
          @children.each {|elt| q.breakable; q.pp elt }
          if @etag
            q.breakable; q.pp @etag
          end
        }
      end
    end