def passed_country(country)
      code = country_prefix(country)
      if Core::PLUS_SIGN == @original[0] && code && !sanitized.start_with?(code)
        # in case number passed with + but it doesn't start with passed
        # country prefix
        country = nil
      end
      country
    end
def passed_country(country)
      code = country_prefix(country)
      if Core::PLUS_SIGN == @original[0] && code && !sanitized.start_with?(code)
        # in case number passed with + but it doesn't start with passed
        # country prefix
        country = nil
      end
      country
    end
defines if to validate against single country or not