public void setLastUpdatedDateTime(java.util.Date lastUpdatedDateTime) {
        this.lastUpdatedDateTime = lastUpdatedDateTime;
    }
<p>
The last update date and time (in Unix time) of the dataset group.
</p>

@param lastUpdatedDateTime
       The last update date and time (in Unix time) of the dataset group.
aws-java-sdk-personalize/src/main/java/com/amazonaws/services/personalize/model/DatasetGroup.java