public void setCheckDigitString(String checkDigitString) {
        this.checkDigitString = checkDigitString;
    }
Enter the check digit string for the watermark

@param checkDigitString
       Enter the check digit string for the watermark
aws-java-sdk-medialive/src/main/java/com/amazonaws/services/medialive/model/NielsenNaesIiNw.java