public String getCbetSourceId() {
        return this.cbetSourceId;
    }
Use the CSID that Nielsen provides to you. This CBET source ID should be unique to your Nielsen account but
common to all of your output assets that have CBET watermarking. Required when you choose a value for the setting
Watermark types that includes CBET.

@return Use the CSID that Nielsen provides to you. This CBET source ID should be unique to your Nielsen account
        but common to all of your output assets that have CBET watermarking. Required when you choose a value for
        the setting Watermark types that includes CBET.
aws-java-sdk-mediaconvert/src/main/java/com/amazonaws/services/mediaconvert/model/NielsenNonLinearWatermarkSettings.java