metricName property
A friendly name or description for the metrics for this
RuleGroup. The name can contain only alphanumeric characters
(A-Z, a-z, 0-9), with maximum length 128 and minimum length one. It can't
contain whitespace or metric names reserved for AWS WAF, including "All" and
"Default_Action." You can't change the name of the metric after you create
the RuleGroup.
Implementation
final String? metricName;