Para fazer isso, nós declaramos o método `__call__`:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[12] *}

Neste caso, o `__call__` é o que o **FastAPI** utilizará para verificar parâmetros adicionais e sub dependências, e isso é o que será chamado para passar o valor ao parâmetro na sua *função de operação de rota* posteriormente.

## Parametrizar a instância { #parameterize-the-instance }

           * modified concurrently), or it might have been only an estimate to begin with (for a
           * collection like ConcurrentHashMap, which sums up several counters that may not be in
           * sync with one another). We accommodate that by resizing as necessary.
           */
          toJoin = Arrays.copyOf(toJoin, expandedCapacity(toJoin.length, toJoin.length + 1));

     * For example, if the {@code module-info.class} entry of a <abbr>JAR</abbr> file exists only in the
     * {@code META-INF/versions/17/} sub-directory, then the default location of that dependency will be
     * the module-path only if the {@code --release} option is equal or greater than 17.
     *

				if atomic.LoadInt32(&c.connected) == closed {
					return
				}
				if c.HealthCheckFn() {
					if atomic.CompareAndSwapInt32(&c.connected, offline, online) {
						now := time.Now()
						disconnected := now.Sub(c.LastConn())
						logger.Event(context.Background(), "healthcheck", "Client '%s' re-connected in %s", c.url.String(), disconnected)
						atomic.StoreInt64(&c.lastConn, now.UnixNano())
					}
					return
				}

		{"test-bucket-list-object", "Asia", "", "", 10, resultCases[24], nil, true},
		// Tests with prefix and delimiter (55-57).
		// With delimiter the code should not recurse into the sub-directories of prefix Dir.
		{"test-bucket-list-object", "Asia", "", SlashSeparator, 10, resultCases[25], nil, true},
		{"test-bucket-list-object", "new", "", SlashSeparator, 10, resultCases[26], nil, true},

ck/runtime,tensorflow/core/runtime_fallback/util,tensorflow/core/runtime_fallback/test,tensorflow/core/runtime_fallback/test/gpu,tensorflow/core/runtime_fallback/test/saved_model,tensorflow/core/runtime_fallback/test/testdata,tensorflow/core/tfrt/stubs,tensorflow/core/tfrt/tfrt_session,tensorflow/core/tfrt/mlrt,tensorflow/core/tfrt/mlrt/attribute,tensorflow/core/tfrt/mlrt/kernel,tensorflow/core/tfrt/mlrt/bytecode,tensorflow/core/tfrt/mlrt/interpreter,tensorflow/compiler/mlir/tfrt/translate/mlrt,...

                      The Lobster Quadrille


  The Mock Turtle sighed deeply, and drew the back of one flapper
across his eyes.  He looked at Alice, and tried to speak, but for
a minute or two sobs choked his voice.  `Same as if he had a bone
in his throat,' said the Gryphon:  and it set to work shaking him
and punching him in the back.  At last the Mock Turtle recovered

??r&081,a&-morf,tskcor-a-si,?b:asnd,,e&d&iv&erp-yb-detsoh.saap,orpnwo,?ner&.ppa,no,??e&bevres,nigne-na-si,?ggolb-a-si,h&caet-a-si,pargotohp-a-si,?krow-drah-a-si,n&gised-a-si,ia&rtlanosrep-a-si,tretne-na-si,??p&acsdnal-a-si,eekkoob-a-si,?retac-a-si,subq,tn&ecysrab,iap-a-si,uh-a-si,?vres&-&ki.&cpj-rev-duolcj,duolcj,?s&ndnyd,pvtsaf,??bdym,inim,nmad,pc,sak,?y&alp-a-si,wal-a-si,?zilibomdeepsegap,?g,ituob,mgrp.nex,o&-morf,pav-no,sivdalaicnanif-a-si,t&areleccalabolgswa,c&a-na-si,od-a-si,?susaym,??p-mor...

	SRL	X6, X5, X7				// b3d36200
	SRL	X5, X6					// 33535300
	SRL	$1, X5, X6				// 13d31200
	SRL	$1, X5					// 93d21200

	SUB	X6, X5, X7				// b3836240
	SUB	X5, X6					// 33035340
	SUB	$-2047, X5, X6				// 1383f27f
	SUB	$2048, X5, X6				// 13830280
	SUB	$-2047, X5				// 9382f27f
	SUB	$2048, X5				// 93820280

	SRA	X6, X5, X7				// b3d36240
	SRA	X5, X6					// 33535340
	SRA	$1, X5, X6				// 13d31240

### 依賴項(Dependencies)

同樣適用於[依賴項](tutorial/dependencies/index.md){.internal-link target=_blank}。如果依賴項是一個標準的 `def` 函式，而不是 `async def`，那麼它在外部的執行緒池被運行。

### 子依賴項

你可以擁有多個相互依賴的依賴項和[子依賴項](tutorial/dependencies/sub-dependencies.md){.internal-link target=_blank} （作為函式定義的參數），其中一些可能是用 `async def` 宣告，也可能是用 `def` 宣告。它們仍然可以正常運作，用 `def` 定義的那些將會在外部的執行緒中呼叫（來自執行緒池），而不是被「等待」。

### 其他輔助函式