# File lib/openid/store/memory.rb, line 22
      def get_association(server_url, handle=nil)
        assocs = @associations[server_url]
        assoc = nil
        if handle
          assoc = assocs[handle]
        else
          assoc = assocs.values.sort{|a,b| a.issued <=> b.issued}[-1]
        end

        return assoc
      end