o.SetFilter()
	if o.Transient {
		o.Create = false
	}

	// We have 2 cases:
	// 1) Cold listing, just list.
	// 2) Returning, but with no id. Start async listing.
	// 3) Returning, with ID, stream from list.
	//
	// If we don't have a list id we must ask the server if it has a cache or create a new.
	if o.ID != "" && !o.Transient {
		// Create or ping with handout...

th-1).toString(16)+" ":"\\"+e}ce.escapeSelector=function(e){return(e+"").replace(f,p)};var ye=C,me=s;!function(){var e,b,w,o,a,T,r,C,d,i,k=me,S=ce.expando,E=0,n=0,s=W(),c=W(),u=W(),h=W(),l=function(e,t){return e===t&&(a=!0),0},f="checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",t="(?:\\\\[\\da-fA-F]{1,6}"+ge+"?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+",p="\\["+ge+"*("+t+")(?:"+ge+"*([*^$|!~]?=)"+ge+"*(?:'((?:\\\\.|[^\\\\'])*...

### Existing object replication

      get() = originalRequest.url.host

    val request: Request
      get() = originalRequest

    val call: RealCall
      get() = this@RealCall

    /**
     * Attempt to enqueue this async call on [executorService]. This will attempt to clean up
     * if the executor has been shut down by reporting the call as failed.
     */
    fun executeOn(executorService: ExecutorService) {

                directoryPath, leaseKey, directory);
            
            activeWatchers.put(directoryPath, handle);
            
            // Start async change notification
            startAsyncNotification(handle);
            
        } catch (Exception e) {
            log.error("Failed to start directory watching for: " + directoryPath, e);
        }
    }

{!../../docs_src/bigger_applications/app/routers/items.py!}
```

As the path of each *path operation* has to start with `/`, like in:

```Python hl_lines="1"
@router.get("/{item_id}")
async def read_item(item_id: str):
    ...
```

...the prefix must not include a final `/`.

So, the prefix in this case is `/items`.

/// tip | Dica

Perceba que aqui estamos utilizando o `open()` da biblioteca padrão que não suporta `async` e `await`, e declaramos a operação de rota com o `def` básico.

///

### `FileResponse`

Envia um arquivo  de forma assíncrona e contínua (stream).
*

        // Next command
        SMBUtil.writeInt4(0, buffer, headerStart + 20);
        // Message ID
        SMBUtil.writeInt8(1, buffer, headerStart + 24);
        // Reserved/Async ID
        SMBUtil.writeInt8(0, buffer, headerStart + 32);
        // Session ID
        SMBUtil.writeInt8(0, buffer, headerStart + 40);
        // Signature

						setInt64(sp + 40, toCopy.length);
						this.mem.setUint8(sp + 48, 1);
					},

					"debug": (value) => {
						console.log(value);
					},
				}
			};
		}

		async run(instance) {
			if (!(instance instanceof WebAssembly.Instance)) {
				throw new Error("Go.run: WebAssembly.Instance expected");
			}
			this._inst = instance;
			this.mem = new DataView(this._inst.exports.mem.buffer);

	z, ok := objectAPI.(*erasureServerPools)
	if !ok {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
		return
	}

	vars := mux.Vars(r)

	var args dsync.LockArgs
	var lockers []dsync.NetLocker
	for path := range strings.SplitSeq(vars["paths"], ",") {
		if path == "" {
			continue
		}
		args.Resources = append(args.Resources, path)
	}