caddy/caddytest/integration/caddyfile_adapt/tracing.txt

:80 {
	tracing /myhandler {
		span my-span
	}
}
----------
{
	"apps": {
		"http": {
			"servers": {
				"srv0": {
					"listen": [
						":80"
					],
					"routes": [
						{
							"match": [
								{
									"path": [
										"/myhandler"
									]
								}
							],
							"handle": [
								{
									"handler": "tracing",
									"span": "my-span"
								}
							]
						}
					]
				}
			}
		}
	}
}