public String getSparseTrackType() {
        return this.sparseTrackType;
    }
Identifies the type of data to place in the sparse track: - SCTE35: Insert SCTE-35 messages from the source
content. With each message, insert an IDR frame to start a new segment. - SCTE35_WITHOUT_SEGMENTATION: Insert
SCTE-35 messages from the source content. With each message, insert an IDR frame but don't start a new segment. -
NONE: Don't generate a sparse track for any outputs in this output group.

@return Identifies the type of data to place in the sparse track: - SCTE35: Insert SCTE-35 messages from the
        source content. With each message, insert an IDR frame to start a new segment. -
        SCTE35_WITHOUT_SEGMENTATION: Insert SCTE-35 messages from the source content. With each message, insert
        an IDR frame but don't start a new segment. - NONE: Don't generate a sparse track for any outputs in this
        output group.
@see SmoothGroupSparseTrackType
aws-java-sdk-medialive/src/main/java/com/amazonaws/services/medialive/model/MsSmoothGroupSettings.java