# File addon/buildr/javacc.rb, line 67
    def jjtree(*args)
      if Hash === args.last
        options = args.pop
        in_package = options[:in_package].split(".")
        build_node_files = options[:build_node_files]
      else
        in_package = []
      end
      file(path_to(:target, :generated, :jjtree)=>args.flatten) do |task|
        JavaCC.jjtree task.prerequisites, :output=>File.join(task.name, in_package), :build_node_files=>build_node_files
      end
    end