* Ihre Abhängigkeitsfunktion („Dependable“) mit den richtigen Parametern aufzurufen.
* Sich das Ergebnis von dieser Funktion zu holen.
* Dieses Ergebnis dem Parameter Ihrer *Pfadoperation-Funktion* zuzuweisen.

```mermaid
graph TB

common_parameters(["common_parameters"])
read_items["/items/"]
read_users["/users/"]

common_parameters --> read_items
common_parameters --> read_users
```

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.graph;

import static com.google.common.truth.Truth.assertThat;

import org.jspecify.annotations.NullUnmarked;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

* Appeler votre fonction de dépendance (« dependable ») avec les bons paramètres.
* Récupérer le résultat de votre fonction.
* Affecter ce résultat au paramètre dans votre fonction de chemin d’accès.

```mermaid
graph TB

common_parameters(["common_parameters"])
read_items["/items/"]
read_users["/users/"]

common_parameters --> read_items
common_parameters --> read_users
```

 * article on <a href="https://github.com/google/guava/wiki/ListenableFutureExplained">{@code
 * ListenableFuture}</a>.
 *
 * <p>The main purpose of {@code ListenableFuture} is to help you chain together a graph of
 * asynchronous operations. You can chain them together manually with calls to methods like {@link
 * Futures#transform(ListenableFuture, Function, Executor) Futures.transform}, but you will often

              <include>org.apache.maven.execution</include>
              <include>org.apache.maven.execution.scope</include>
              <include>org.apache.maven.feature</include>
              <include>org.apache.maven.graph</include>
              <include>org.apache.maven.lifecycle</include>
              <include>org.apache.maven.model</include>
              <include>org.apache.maven.monitor</include>

  fun run() {
    // Launch wireshark in the background
    val process = eventListenerFactory.launchWireShark()

    val fbRequest =
      Request
        .Builder()
        .url("https://graph.facebook.com/robots.txt?s=fb")
        .build()
    val twitterRequest =
      Request
        .Builder()
        .url("https://api.twitter.com/robots.txt?s=tw")
        .build()
    val googleRequest =

import org.eclipse.aether.RepositorySystem;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.RepositorySystemSession.CloseableSession;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.graph.DependencyFilter;
import org.eclipse.aether.internal.impl.DefaultChecksumPolicyProvider;
import org.eclipse.aether.internal.impl.DefaultRemoteRepositoryManager;

*경로 처리 함수*에서는 `query_or_cookie_extractor`라는 의존성 하나만 선언하고 있다는 점에 주목하세요.

하지만 **FastAPI**는 `query_or_cookie_extractor`를 호출하는 동안 그 결과를 전달하기 위해, 먼저 `query_extractor`를 해결해야 한다는 것을 알고 있습니다.

///

```mermaid
graph TB

query_extractor(["query_extractor"])
query_or_cookie_extractor(["query_or_cookie_extractor"])

read_query["/items/"]

query_extractor --> query_or_cookie_extractor --> read_query
```

/// info

注意，在路徑操作函式中我們只宣告了一個相依項 `query_or_cookie_extractor`。

但 **FastAPI** 會知道它必須先解析 `query_extractor`，在呼叫 `query_or_cookie_extractor` 時把其結果傳入。

///

```mermaid
graph TB

query_extractor(["query_extractor"])
query_or_cookie_extractor(["query_or_cookie_extractor"])

read_query["/items/"]

query_extractor --> query_or_cookie_extractor --> read_query
```

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.graph;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.base.Function;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;