code: func GetCountryMobileToken(countryCallingCode int) string {
  	if val, ok := MOBILE_TOKEN_MAPPINGS[countryCallingCode]; ok {
  		return val
  	}
  	return ""
  }
docs: // Returns the mobile token for the provided country calling code if it
  // has one, otherwise returns an empty string. A mobile token is a number
  // inserted before the area code when dialing a mobile number from that
  // country from abroad.