public Builder suppressionReason(String eventSuppressionReason) {
            suppressionReason = eventSuppressionReason;
            return this;
        }
Sets a reason for suppressing the event.

<p>This is only relevant if the severity is SUPPRESSED.

@param eventSuppressionReason Event suppression reason.
@return Returns the builder.
smithy-model/src/main/java/software/amazon/smithy/model/validation/ValidationEvent.java