assertEquals("\\28", ldapManager.escapeLDAPSearchFilter("("));
        assertEquals("\\29", ldapManager.escapeLDAPSearchFilter(")"));
        assertEquals("\\28admin\\29", ldapManager.escapeLDAPSearchFilter("(admin)"));
        assertEquals("\\28objectClass=\\2a\\29", ldapManager.escapeLDAPSearchFilter("(objectClass=*)"));
    }

    @Test

        // Asterisk injection attempt
        assertEquals("cn=admin\\2a,dc=example,dc=com", fessConfig.getLdapSecurityPrincipal("admin*"));

        // Parentheses injection attempt
        assertEquals("cn=admin\\29\\28cn=\\2a,dc=example,dc=com", fessConfig.getLdapSecurityPrincipal("admin)(cn=*"));

        // Backslash
        assertEquals("cn=admin\\5ctest,dc=example,dc=com", fessConfig.getLdapSecurityPrincipal("admin\\test"));
    }

     * when the escaper is made compliant with RFC 2396, but that's a good thing (just change them
     * to assertUnescaped).
     */
    assertEscaping(e, "%21", '!');
    assertEscaping(e, "%28", '(');
    assertEscaping(e, "%29", ')');
    assertEscaping(e, "%7E", '~');
    assertEscaping(e, "%27", '\'');

    // Plus for spaces
    assertEscaping(e, "+", ' ');
    assertEscaping(e, "%2B", '+');

     * when the escaper is made compliant with RFC 2396, but that's a good thing (just change them
     * to assertUnescaped).
     */
    assertEscaping(e, "%21", '!');
    assertEscaping(e, "%28", '(');
    assertEscaping(e, "%29", ')');
    assertEscaping(e, "%7E", '~');
    assertEscaping(e, "%27", '\'');

    // Plus for spaces
    assertEscaping(e, "+", ' ');
    assertEscaping(e, "%2B", '+');

### Override the method { #override-the-method }

Now you can replace the `.openapi()` method with your new function.

{* ../../docs_src/extending_openapi/tutorial001_py310.py hl[29] *}

### Check it { #check-it }

Once you go to [http://127.0.0.1:8000/redoc](http://127.0.0.1:8000/redoc) you will see that you are using your custom logo (in this example, **FastAPI**'s logo):

結構只會產生一次，之後的請求都會使用相同的快取結果。

{* ../../docs_src/extending_openapi/tutorial001_py310.py hl[13:14,25:26] *}

### 覆寫方法 { #override-the-method }

現在你可以用新的函式取代 `.openapi()` 方法。

{* ../../docs_src/extending_openapi/tutorial001_py310.py hl[29] *}

### 檢查看看 { #check-it }

造訪 [http://127.0.0.1:8000/redoc](http://127.0.0.1:8000/redoc) 後，你會看到自訂的 logo（此例為 **FastAPI** 的 logo）：

{* ../../docs_src/extending_openapi/tutorial001_py310.py hl[13:14,25:26] *}

### メソッドの上書き { #override-the-method }

これで、`.openapi()` メソッドを新しい関数に置き換えられます。

{* ../../docs_src/extending_openapi/tutorial001_py310.py hl[29] *}

### 確認 { #check-it }

[http://127.0.0.1:8000/redoc](http://127.0.0.1:8000/redoc) にアクセスすると、カスタムロゴ（この例では **FastAPI** のロゴ）が使われていることが確認できます:

`async`가 없는 일반 `def` 함수도 사용할 수 있으며, 동일하게 `yield`를 사용할 수 있습니다.

FastAPI가 이벤트 루프를 막지 않도록 올바르게 실행을 보장합니다.

이 경우 함수가 async가 아니므로 적절한 반환 타입은 `Iterable[Item]`입니다:

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[28:31] hl[29] *}

### 반환 타입 없음 { #no-return-type }

반환 타입을 생략할 수도 있습니다. FastAPI는 [`jsonable_encoder`](./encoder.md)를 사용해 데이터를 변환하고 전송합니다.

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

As in this case the function is not async, the right return type would be `Iterable[Item]`:

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[28:31] hl[29] *}

### No Return Type { #no-return-type }

You can also omit the return type. FastAPI will use the [`jsonable_encoder`](./encoder.md) to convert the data and send it.

你也可以使用一般的 `def` 函式（沒有 `async`），並同樣使用 `yield`。

FastAPI 會確保正確執行，不會阻塞事件迴圈。

由於此函式不是 async，正確的回傳型別是 `Iterable[Item]`：

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[28:31] hl[29] *}

### 無回傳型別 { #no-return-type }

你也可以省略回傳型別。FastAPI 會使用 [`jsonable_encoder`](./encoder.md) 轉換資料並送出。

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