public ClusterOperationV2 withStartTime(java.util.Date startTime) {
        setStartTime(startTime);
        return this;
    }
<p>
The time at which operation was started.
</p>

@param startTime
       <p>
       The time at which operation was started.
       </p>
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-kafka/src/main/java/com/amazonaws/services/kafka/model/ClusterOperationV2.java