// in 'pool.bin', this is eventually used for decommissioning the pool.
func (z *erasureServerPools) Init(ctx context.Context) error {
	// Load rebalance metadata if present
	if err := z.loadRebalanceMeta(ctx); err == nil {
		// Start rebalance routine if we can reload rebalance metadata.
		z.StartRebalance()
	}

	meta := poolMeta{}
	if err := meta.load(ctx, z.serverPools[0], z.serverPools); err != nil {
		return err
	}

        responses: Optional[Dict[Union[int, str], Dict[str, Any]]] = None,
        deprecated: Optional[bool] = None,
        name: Optional[str] = None,
        methods: Optional[Union[Set[str], List[str]]] = None,
        operation_id: Optional[str] = None,
        response_model_include: Optional[IncEx] = None,
        response_model_exclude: Optional[IncEx] = None,
        response_model_by_alias: bool = True,

                sb.append( '/' );
            }

            str = sb.toString();

            int i = str.length() - 2;
            while( str.charAt( i ) != '/' ) {
                i--;
            }

            return str.substring( 0, i + 1 );
        }

        return "smb1://";
    }

/**
 * Returns the full uncanonicalized URL of this SMB resource. An

///

/// check

Bei der Einbindung von Routern müssen Sie sich keine Gedanken über die Performanz machen.

Dies dauert Mikrosekunden und geschieht nur beim Start.

Es hat also keinen Einfluss auf die Leistung. ⚡

///

### Einen `APIRouter` mit benutzerdefinierten `prefix`, `tags`, `responses` und `dependencies` einfügen

from typing import Optional

app = FastAPI()


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


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


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


@app.put("/items/{item_id}")

{!../../docs_src/python_types/tutorial009.py!}
```

Using `Optional[str]` instead of just `str` will let the editor help you detect errors where you could be assuming that a value is always a `str`, when it could actually be `None` too.

`Optional[Something]` is actually a shortcut for `Union[Something, None]`, they are equivalent.

This also means that in Python 3.10, you can use `Something | None`:

//// tab | Python 3.10+

SELECTOR_NAVBAR_NAV = '.navbar-nav'\nconst SELECTOR_VISIBLE_ITEMS = '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'\n\nconst PLACEMENT_TOP = 'top-start'\nconst PLACEMENT_TOPEND = 'top-end'\nconst PLACEMENT_BOTTOM = 'bottom-start'\nconst PLACEMENT_BOTTOMEND = 'bottom-end'\nconst PLACEMENT_RIGHT = 'right-start'\nconst PLACEMENT_LEFT = 'left-start'\n\nconst Default = {\n  offset: 0,\n  flip: true,\n  boundary: 'scrollParent',\n  reference: 'toggle',\n  display: 'dynamic',\n  popperConfig: null\n}\n\nconst...

[kubernetes-client-linux-amd64.tar.gz](https://storage.googleapis.com/kubernetes-release/release/v1.2.7/kubernetes-client-linux-amd64.tar.gz) | `9a5fcd87514b88eb25173e574aef5b5343816c07ab5947d06787c9f12c40f54a`

[kubernetes-client-windows-amd64.tar.gz](https://dl.k8s.io/v1.29.9/kubernetes-client-windows-amd64.tar.gz) | ccfd5cd57f56632b3b885a0efe77b8380705fe586a4f9bb1635bd6815b82820048e7f6d6b926e7ce1b6cd5678c252231dc6f6807834f1e181a6eb2c7cfcc79b9

   *
   * <ul>
   *   <li>Any part containing non-ASCII characters is considered valid.
   *   <li>Underscores ('_') are permitted wherever dashes ('-') are permitted.
   *   <li>Parts other than the final part may start with a digit, as mandated by <a
   *       href="https://tools.ietf.org/html/rfc1123#section-2">RFC 1123</a>.
   * </ul>
   *
   * @param domain A domain name (not IP address)