Describe Network Acls Response from the service

You can filter the results to return information only about ACLs that match criteria you specify. For example, you could get information for only the ACL associated with a particular subnet. The ACL must match at least one of the specified values for it to be included in the results. You can specify multiple filters (e.g., the ACL is associated with a particular subnet and has an egress entry that denies traffic to a particular port). The result includes information for a particular ACL only if it matches all your filters. If there's no match, no special message is returned; the response is simply empty. You can use wildcards with the filter values: * matches zero or more characters, and ? matches exactly one character.You can escape special characters using a backslash before the character. For example, a value of \*amazon\?\\ searches for the literal string *amazon?\.