@com.fasterxml.jackson.annotation.JsonProperty("Reason")
    public void setReason(String reason) {
        this.reason = reason;
    }
<p>
The reason that validation failed.
</p>

@param reason
       The reason that validation failed.
@see ValidationExceptionReason
aws-java-sdk-lookoutmetrics/src/main/java/com/amazonaws/services/lookoutmetrics/model/ValidationException.java