A friendly name or description for the metrics for this WebACL.
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 MetricName after you create the
WebACL.
A unique identifier for a WebACL. You use WebACLId
to get information about a WebACL (see GetWebACL),
update a WebACL (see UpdateWebACL), and delete a
WebACL from AWS WAF (see DeleteWebACL).