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

@param endTime
       The timestamp when notebook execution started.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/NotebookExecutionSummary.java