Com o Sistema de Injeção de Dependência, você também pode informar ao **FastAPI** que sua *função de operação de rota* também "depende" em algo a mais que deve ser executado antes de sua *função de operação de rota*, e o **FastAPI** se encarrega de executar e "injetar" os resultados.

Outros termos comuns para essa mesma ideia de "injeção de dependência" são:

* recursos
* provedores
* serviços
* injetáveis
* componentes

## Plug-ins em **FastAPI**

        this.unprefixedPathKeys = unprefixedPathKeys;
        this.projectDir = projectDir;
        this.pathTranslator = pathTranslator;
    }

    @Override
    public Object execute(String expression, Object value) {
        if (value != null) {
            expression = ValueSourceUtils.trimPrefix(expression, expressionPrefixes, true);

            if (unprefixedPathKeys.contains(expression)) {

  public void run() throws Exception {
    Request request = new Request.Builder()
        .url("https://publicobject.com/secrets/hellosecret.txt")
        .build();

    try (Response response = client.newCall(request).execute()) {
      if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

      System.out.println(response.body().string());
    }
  }

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.util.ArrayList;
import java.util.List;

import org.apache.maven.eventspy.EventSpy;
import org.apache.maven.execution.ExecutionListener;
import org.eclipse.aether.RepositoryListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Dispatches callbacks to all registered EventSpies.
 * @since 3.0.2
 */
@Named

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.execution;

import java.util.List;

import org.apache.maven.project.DependencyResolutionResult;
import org.apache.maven.project.MavenProject;

/**
 */
public interface MavenExecutionResult {

		Long: `
Prints the metrics for the specified service(s) when running in Kubernetes.

This command finds a Prometheus pod running in the specified istio system
namespace. It then executes a series of queries per requested workload to
find the following top-level workload metrics: total requests per second,
error rate, and request latency at p50, p90, and p99 percentiles. The

            }
          },
        )
        .build()

    val request =
      Request.Builder()
        .url("https://www.google.com")
        .build()
    client.newCall(request).execute().use { response ->
      assertThat(response.code).isEqualTo(200)
    }
  }

    }
  }

  public void testVerifyGetsCalled() {
    TesterThatCountsCalls tester = new TesterThatCountsCalls();

    tester.test();

    assertEquals(
        "Should have verified once per stimulus executed",
        tester.numCallsToVerify,
        tester.numCallsToNewTargetIterator * STEPS);
  }

  public void testVerifyCanThrowAssertionThatFailsTest() {

///

## Write the callback documentation code

This code won't be executed in your app, we only need it to *document* how that *external API* should look like.

But, you already know how to easily create automatic documentation for an API with **FastAPI**.

// Copyright 2024 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This program can be used as go_ios_$GOARCH_exec by the Go tool. It executes
// binaries on the iOS Simulator using the XCode toolchain.
package main

import (
	"fmt"
	"go/build"
	"log"
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"strings"
	"syscall"
)