# File lib/rd/rd2html-ext-lib.rb, line 64
    def install_ref_extension
      extend RefExtension
      @ref_extension = []
      (methods + private_methods).sort.each do |m|
        if /^ref_ext/ =~ m
          @ref_extension.push(m.intern)
        end
      end
      @ref_extension.push(:default_ref_ext)
    end