# File lib/faker/bank.rb, line 14
      def iban(bank_country_code="GB")
        details = iban_details.find { |country| country["bank_country_code"] == bank_country_code.upcase }
        bcc = details["bank_country_code"] + 2.times.map{ rand(10) }.join
        ilc = (0...details["iban_letter_code"].to_i).map{ (65 + rand(26)).chr }.join
        ib  = details["iban_digits"].to_i.times.map{ rand(10) }.join
        bcc + ilc + ib
      end