public void setEndTime(java.util.Date endTime) {
        this.endTime = endTime;
    }
<p>
The timestamp when notebook execution started.
</p>

@param endTime
       The timestamp when notebook execution started.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/NotebookExecutionSummary.java