Upgrading to v2

I’m a bit confused by the wrap field JSON Config Structure - Caddy Documentation

	"logging": {
		"logs": {
			"log0": {
				"writer": {
					"filename": "/var/log/caddy/access.log",
					"output": "file",
					"roll": false
				},
				"encoder": {
					"format": "filter",
					"wrap": "filter",
					"fields": {
						"filter": "ip_mask",
						"ipv4_cidr": "255.255.255.0",
						"ipv6_cidr": "ffff:ffff:ffff:ffff::"
					}
				},
				"include": [
					"http.log.access.log0"
				]
			}
		}
	},