# File lib_core/rucy/document.rb, line 366
    def method_missing(id, *args, &block)
      if (args.empty? && block.nil?) then
        case (id.to_s)
        when /Document$/
          return doc_get(id.to_s)
        when /Filter$/
          return filter_get(id.to_s)
        else
          return super
        end
      else
        return super
      end
    end