*/
    @Nonnull
    Optional<MojoExecution> getMojoExecution();

    /**
     * Gets the exception that caused the event (if any).
     *
     * @return the exception or {@code empty()} if none
     */
    Optional<Exception> getException();

    def __dict__(self):
        raise NotImplementedError()


class RoleEnum(Enum):
    admin = "admin"
    normal = "normal"


class ModelWithConfig(BaseModel):
    role: Optional[RoleEnum] = None

    model_config = {"use_enum_values": True}


class ModelWithAlias(BaseModel):
    foo: str = Field(alias="Foo")


class ModelWithDefault(BaseModel):
    foo: str = ...  # type: ignore

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: bool = None


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):

		cachevalue.Opts{ReturnLastGood: true, NoWait: true},
		func(ctx context.Context) (DataUsageInfo, error) {
			if objAPI == nil {
				return DataUsageInfo{}, errServerNotInitialized
			}
			ctx, done := context.WithTimeout(ctx, 2*time.Second)
			defer done()

			return loadDataUsageFromBackend(ctx, objAPI)
		},
	)
}

// GetBucketUsageInfo return bucket usage info for a given bucket

            File file = new File(path);
            if (file.isAbsolute()) {
                // path was already absolute, just normalize file separator and we're done
                result = file.getPath();
            } else if (file.getPath().startsWith(File.separator)) {
                // drive-relative Windows path, don't align with project directory but with drive root

/// note

FastAPI will know that the value of `q` is not required because of the default value `= None`.

The `str | None` (Python 3.10+) or `Union` in `Union[str, None]` (Python 3.9+) is not used by FastAPI to determine that the value is not required, it will know it's not required because it has a default value of `= None`.

But adding the type annotations will allow your editor to give you better support and detect errors.

///

                echo "Smokeshow upload success!"
                break
            fi
            echo "Smokeshow upload error, sleep 1 sec and try again."
            sleep 1
          done
        env:
          SMOKESHOW_GITHUB_STATUS_DESCRIPTION: Coverage {coverage-percentage}
          SMOKESHOW_GITHUB_COVERAGE_THRESHOLD: 100
          SMOKESHOW_GITHUB_CONTEXT: coverage

    @Volatile private var queryParamsNameToRedact = emptySet<String>()

    @set:JvmName("level")
    @Volatile
    var level = Level.NONE

    enum class Level {
      /** No logs. */
      NONE,

      /**
       * Logs request and response lines.
       *
       * Example:
       * ```
       * --> POST /greeting http/1.1 (3-byte body)
       *

{* ../../docs_src/body/tutorial001_py310.py hl[5:9] *}

与声明查询参数一样，包含默认值的模型属性是可选的，否则就是必选的。默认值为 `None` 的模型属性也是可选的。

例如，上述模型声明如下 JSON **对象**（即 Python **字典**）：

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

……由于 `description` 和 `tax` 是可选的（默认值为 `None`），下面的 JSON **对象**也有效：

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

        crawlerContext.setStatus(CrawlerStatus.RUNNING);
        assertEquals(CrawlerStatus.RUNNING, crawlerContext.getStatus());

        crawlerContext.setStatus(CrawlerStatus.DONE);
        assertEquals(CrawlerStatus.DONE, crawlerContext.getStatus());

        crawlerContext.setStatus(null);
        assertNull(crawlerContext.getStatus());
    }

    /**
     * Test urlFilter getter and setter
     */