code: func GetExampleNumberForType(regionCode string, typ PhoneNumberType) *PhoneNumber {
  	// Check the region code is valid.
  	if !isValidRegionCode(regionCode) {
  		return nil
  	}
  	//PhoneNumberDesc (pointer?)
  	var desc = getNumberDescByType(getMetadataForRegion(regionCode), typ)
  	exNum := desc.GetExampleNumber()
  	if len(exNum) > 0 {
  		num, err := Parse(exNum, regionCode)
  		if err != nil {
  			return nil
  		}
  		return num
  	}
  	return nil
  }
docs: // Gets a valid number for the specified region and number type.