add_object (PDF::Writer)

          # File lib/pdf/writer.rb, line 1778
    1778:   def add_object(id, where = :this_page)
    1779:     obj = @loose_objects.detect { |ii| ii == id }
    1780:
    1781:     if obj and @current_contents != obj
    1782:       case where
    1783:       when :all_pages, :this_page
    1784:         @add_loose_objects[obj] = where if where == :all_pages
    1785:         @current_contents.on_page.contents << obj if @current_contents.on_page
    1786:       when :even_pages
    1787:         @add_loose_objects[obj] = where
    1788:         page = @current_contents.on_page
    1789:         add_object(id) if (page.info.page_number % 2) == 0
    1790:       when :odd_pages
    1791:         @add_loose_objects[obj] = where
    1792:         page = @current_contents.on_page
    1793:         add_object(id) if (page.info.page_number % 2) == 1
    1794:       when :all_following_pages
    1795:         @add_loose_objects[obj] = :all_pages
    1796:       when :following_even_pages
    1797:         @add_loose_objects[obj] = :even_pages
    1798:       when :following_odd_pages
    1799:         @add_loose_objects[obj] = :odd_pages
    1800:       end
    1801:     end
    1802:   end