<div class="card-body">
                                <div>
                                    <la:info id="msg" message="true">
                                        <div class="alert alert-info">${msg}</div>
                                    </la:info>
                                    <la:errors property="_global"/>
                                </div>
                                <c:if test="${crudMode==2}">

			<h2>
				<la:message key="labels.advance_search_title" />
			</h2>
			<div class="notification">${notification}</div>
			<div>
				<la:info id="msg" message="true">
					<div class="alert alert-info">${msg}</div>
				</la:info>
				<la:errors header="errors.front_header" footer="errors.front_footer" prefix="errors.front_prefix"
					suffix="errors.front_suffix"
				/>
			</div>
			<div class="form-group row">

            try {
                client.close();
            } catch (final OpenSearchException e) {
                logger.warn("Failed to close client.", e);
            }
            logger.info("Disconnected to {}", address);
        }
        connected = false;
    }

    @Override
    public ThreadPool threadPool() {
        return client.threadPool();
    }

    @Override

```

### 使用省略号(`...`)声明必需参数

有另一种方法可以显式的声明一个值是必需的，即将默认参数的默认值设为 `...` ：

```Python hl_lines="7"
{!../../docs_src/query_params_str_validations/tutorial006b.py!}
```

/// info

如果你之前没见过 `...` 这种用法：它是一个特殊的单独值，它是 <a href="https://docs.python.org/3/library/constants.html#Ellipsis" class="external-link" target="_blank">Python 的一部分并且被称为「省略号」</a>。
Pydantic 和 FastAPI 使用它来显式的声明需要一个值。

///

    end
    Note over dep: After yield
    opt Handle other exception
        dep -->> dep: Handle exception, can't change response. E.g. close DB session.
    end
```

/// info | "Дополнительная информация"

Клиенту будет отправлен только **один ответ**. Это может быть один из ответов об ошибке или это будет ответ от *операции пути*.

my_user: User = User(id=3, name="John Doe", joined="2018-07-19")

second_user_data = {
    "id": 4,
    "name": "Mary",
    "joined": "2018-11-30",
}

my_second_user: User = User(**second_user_data)
```

/// info

`**second_user_data` nghĩa là:

Truyền các khóa và giá trị của dict `second_user_data` trực tiếp như các tham số kiểu key-value, tương đương với: `User(id=4, name="Mary", joined="2018-11-30")`

///

second_user_data = {
    "id": 4,
    "name": "Mary",
    "joined": "2018-11-30",
}

my_second_user: User = User(**second_user_data)
```


/// info

`**second_user_data` 意思是:

直接将`second_user_data`字典的键和值直接作为key-value参数传递，等同于：`User(id=4, name="Mary", joined="2018-11-30")`

///

### 编辑器支持

整个框架都被设计得易于使用且直观，所有的决定都在开发之前就在多个编辑器上进行了测试，来确保最佳的开发体验。

    val encoded = CertificateAdapters.certificate.toDer(decoded)

    assertThat(encoded).isEqualTo(certificateByteString)
  }

  @Test
  fun `private key info`() {
    val privateKeyInfoByteString =
      (
        "MIICdQIBADANBgkqhkiG9w0BAQEFAASCAl8wggJbAgEAAoGBAICkUeG2stqf" +
          "byr6gyiVm5pN9YEDRXlowi+rfYGyWhC7ouW9fXAnhgShQKMOU862mG3tcttSYGdsjM3z1crhQlUzpKqncrzwqbzP" +

    opt Tasks
        operation -->> tasks: Send background tasks
    end
    opt Raise other exception
        tasks -->> tasks: Handle exceptions in the background task code
    end
```

/// info

Only **one response** will be sent to the client. It might be one of the error responses or it will be the response from the *path operation*.

After one of those responses is sent, no other response can be sent.

            }
        }

        Path target = getArtifactPath(
                artifact.getGroupId(), artifact.getArtifactId(), artifact.getVersion(), classifier, extension);
        try {
            LOGGER.info("Copying {} to project local repository", artifact);
            Files.createDirectories(target.getParent());
            Files.copy(
                    artifact.getPath(),
                    target,