if (parent == null) {
      // The given directory is a filesystem root. All zero of its ancestors exist. This doesn't
      // mean that the root itself exists -- consider x:\ on a Windows machine without such a
      // drive -- or even that the caller can create it, but this method makes no such guarantees
      // even for non-root files.
      return;
    }

    if (parent == null) {
      // The given directory is a filesystem root. All zero of its ancestors exist. This doesn't
      // mean that the root itself exists -- consider x:\ on a Windows machine without such a
      // drive -- or even that the caller can create it, but this method makes no such guarantees
      // even for non-root files.
      return;
    }

# Special cases

A few special C types which would normally be represented by a pointer
type in Go are instead represented by a uintptr. Those include:

1. The *Ref types on Darwin, rooted at CoreFoundation's CFTypeRef type.

2. The object types from Java's JNI interface:

	jobject
	jclass
	jthrowable
	jstring
	jarray
	jbooleanArray
	jbyteArray
	jcharArray
	jshortArray

type adminAPIHandlers struct{}

// registerAdminRouter - Add handler functions for each service REST API routes.
func registerAdminRouter(router *mux.Router, enableConfigOps bool) {
	adminAPI := adminAPIHandlers{}
	// Admin router
	adminRouter := router.PathPrefix(adminPathPrefix).Subrouter()

	adminVersions := []string{
		adminAPIVersionPrefix,
	}

```

## Benutzerdefinierte `APIRoute`-Klasse in einem Router

Sie können auch den Parameter `route_class` eines `APIRouter` festlegen:

```Python hl_lines="26"
{!../../docs_src/custom_request_and_route/tutorial003.py!}
```

    }

    /**
     * Return the comment footer.
     *
     * @return the comment footer
     */
    public List<String> getFooter() {
        return footer;
    }

    /**
     * Set the comment footer.
     *
     * @param footer the footer to use
     */
    public void setFooter(List<String> footer) {
        this.footer = footer;
    }

    /**

Guillaume Nodet <******@****.***> 1729859506 +0200

```

## 🛃 `APIRoute` 🎓 📻

👆 💪 ⚒ `route_class` 🔢 `APIRouter`:

```Python hl_lines="26"
{!../../docs_src/custom_request_and_route/tutorial003.py!}
```

👉 🖼, *➡ 🛠️* 🔽 `router` 🔜 ⚙️ 🛃 `TimedRoute` 🎓, & 🔜 ✔️ ➕ `X-Response-Time` 🎚 📨 ⏮️ 🕰 ⚫️ ✊ 🏗 📨:

```Python hl_lines="13-20"
{!../../docs_src/custom_request_and_route/tutorial003.py!}

{* ../../docs_src/custom_request_and_route/tutorial002.py hl[16:18] *}

## Custom `APIRoute` class in a router

You can also set the `route_class` parameter of an `APIRouter`:

{* ../../docs_src/custom_request_and_route/tutorial003.py hl[26] *}

&"fixed"===n.default(F).css("position"),r=n.default(this._config.target+", "+this._config.target+" "+Q);if(0===o&&0===i)t.css({bottom:a.footer,top:a.header}),r.css("height",a.window-(a.header+a.footer));else if(i<=a.footer)if(!1===s){var d=a.header-o;t.css("bottom",a.footer-i).css("top",d>=0?d:0),r.css("height",a.window-(a.footer-i))}else t.css("bottom",a.footer);else o<=a.header?!1===l?(t.css("top",a.header-o),r.css("height",a.window-(a.header-o))):t.css("top",a.header):!1===l?(t.css("top",0),r...