你也可以省略返回类型。FastAPI 将使用 [`jsonable_encoder`](./encoder.md) 转换数据并发送。

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[34:37] hl[35] *}

## `ServerSentEvent` { #serversentevent }

如果你需要设置 `event`、`id`、`retry` 或 `comment` 等 SSE 字段，你可以 yield `ServerSentEvent` 对象，而不是直接返回数据。

从 `fastapi.sse` 导入 `ServerSentEvent`：

{* ../../docs_src/server_sent_events/tutorial002_py310.py hl[4,26] *}

# o applicationBehaviorMap: (NotRequired - Default map:{})
# o outputPackageAdjustmentMap: (NotRequired - Default map:{})
# o dbfluteSystemFinalTimeZone: (NotRequired - Default null)
#
# *The line that starts with '#' means comment-out.
#
map:{
    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o database: (Required)
    #  This is the target database, only considered when generating
    #  the SQL for your DBFlute project.

                return props;
            }
        };
        assertEquals(Long.valueOf(-86400000), negativeEnv.getTimeAdjustTimeMillisAsLong());

        // Test large value (one year as mentioned in comment)
        FessEnv.SimpleImpl yearEnv = new FessEnv.SimpleImpl() {
            protected Properties prepareProperties() {
                Properties props = new Properties();

    }

    /**
     * Creates and stores system properties to the specified file.
     * Includes system properties and job runtime information if available.
     *
     * @param cmdList the command list (used as comment in properties file)
     * @param propFile the file to store properties to
     * @throws IORuntimeException if an I/O error occurs
     */

            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments
                final String replacedLine = line.replaceAll("#.*$", StringUtil.EMPTY).trim();

                // Skip empty lines or comment lines
                if (replacedLine.length() == 0) {
                    if (updater != null) {
                        updater.write(line);

         * The network name of the share.
         */
        public String netname;
        /**
         * The type of the share.
         */
        public int type;
        /**
         * A comment or description of the share.
         */
        public String remark;

        @Override
        public void encode(NdrBuffer _dst) throws NdrException {
            _dst.align(4);

 *
 * @param path Path to existing XML file
 * @param action Action to perform on parsed XML document
 * @param preface optional front matter to add after the XML declaration
 * but before the XML document, e.g. a doctype or comment
 */
void modifyXml(Object path, Action<? super Node> action, String preface = null) {
  Node xml = parseXml(path)
  action.execute(xml)

  File xmlFile = project.file(path)
  xmlFile.withPrintWriter { writer ->

            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments
                final String replacedLine = line.replaceAll("#.*$", StringUtil.EMPTY).trim();

                // Skip empty lines or comment lines
                if (replacedLine.length() == 0) {
                    if (updater != null) {
                        updater.write(line);

 * the License.
 */

package com.google.common.base;

import static com.google.common.base.NullnessCasts.uncheckedCastNullableTToT;
import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;

      boilerplate notice, with the fields enclosed by brackets "[]"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier