public RollbackDetails withRollbackStartTime(java.util.Date rollbackStartTime) {
        setRollbackStartTime(rollbackStartTime);
        return this;
    }
<p>
The date and time at which the rollback began.
</p>

@param rollbackStartTime
       The date and time at which the rollback began.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-autoscaling/src/main/java/com/amazonaws/services/autoscaling/model/RollbackDetails.java