public java.util.Date getLastDriftCheckTimestamp() {
        return this.lastDriftCheckTimestamp;
    }
<p>
Most recent time when CloudFormation performed a drift detection operation on the stack instance. This value will
be <code>NULL</code> for any stack instance on which drift detection hasn't yet been performed.
</p>

@return Most recent time when CloudFormation performed a drift detection operation on the stack instance. This
        value will be <code>NULL</code> for any stack instance on which drift detection hasn't yet been
        performed.
aws-java-sdk-cloudformation/src/main/java/com/amazonaws/services/cloudformation/model/StackInstanceSummary.java