# File lib/feedparser/sgml-parser.rb, line 242
    def finish_endtag(tag)
      if tag == ''
        found = @stack.length - 1
        if found < 0
          unknown_endtag(tag)
          return
        end
      else
        unless @stack.include? tag
          method = 'end_' + tag
          unless self.respond_to?(method)
            unknown_endtag(tag)
          end
          return
        end
        found = @stack.index(tag) #or @stack.length
      end
      while @stack.length > found
        tag = @stack[-1]
        method = 'end_' + tag
        if respond_to?(method)
          handle_endtag(tag, method)
        else
          unknown_endtag(tag)
        end
        @stack.pop
      end
    end