//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package event

import (
	"encoding/json"
	"encoding/xml"
)

// Name - event type enum.
// Refer http://docs.aws.amazon.com/AmazonS3/latest/dev/NotificationHowTo.html#notification-how-to-event-types-and-destinations

        this.basedir = basedir(url);
    }

    // Path Utils

    /**
     * Return the protocol name.
     * <br>
     * E.g: for input
     * <code>http://www.codehaus.org</code> this method will return <code>http</code>
     *
     * @param url the url
     * @return the host name
     */
    private static String protocol(final String url) {
        final int pos = url.indexOf(':');

/// tip | 提示

注意，不能把路由本身（`invoices_callback_router`）传递给 `callback=`，要传递 `invoices_callback_router.routes` 中的 `.routes` 属性。

///

### 查看文档

现在，使用 Uvicorn 启动应用，打开 <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs。</a>

就能看到文档的*路径操作*已经包含了**回调**的内容以及*外部 API*：

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