# File lib/facets/core/hash/having_aquisition.rb, line 23
      def self.fetch(key, *args, &blk)
        begin
          return @fallback.fetch(key, *args, &blk) if @fallback and not key?(key)
        rescue
        end
        val = super
        val.fallback(self) if Hash == val
        val
      end