public void setReason(String reason) {
        this.reason = reason;
    }
<p>
The reason for the exception of the last <code>UpdateDataLake</code>or <code>DeleteDataLake</code> API request.
</p>

@param reason
       The reason for the exception of the last <code>UpdateDataLake</code>or <code>DeleteDataLake</code> API
       request.
aws-java-sdk-securitylake/src/main/java/com/amazonaws/services/securitylake/model/DataLakeUpdateException.java