static {
        CANONICAL_PROTOCOLS.put("wsjar", "jar"); // Proprietary protocol used by WebSphere for jar files
        CANONICAL_PROTOCOLS.put("vfsfile", "file"); // Proprietary protocol used by JBossAS5 for file system
    }

    /**
     * Opens a URL and returns an {@link InputStream}.
     *
     * @param url
     *            The URL. Must not be {@literal null}.

 * for document data. This class wraps an existing map and provides custom behavior
 * for the entrySet method to ensure language fields appear first in iteration order.
 * Used throughout the Fess search system for document data manipulation.
 *
 */
public class DocMap implements Map<String, Object> {

    /** The key used for language field identification */
    private static final String LANG_KEY = "lang";

            this.systemProperties = new Properties();
            synchronized (
                    systemProperties) { // avoid concurrentmodification if someone else sets/removes an unrelated system
                // property
                this.systemProperties.putAll(systemProperties);
            }
        } else {
            this.systemProperties = null;
        }

        return this;

                org.eclipse.aether.graph.Dependency dep = RepositoryUtils.toDependency(artifact, exclusions);
                if (!DependencyScope.SYSTEM.is(dep.getScope())
                        && dep.getArtifact().getFile() != null) {
                    // enable re-resolution
                    org.eclipse.aether.artifact.Artifact art = dep.getArtifact();

* Any keyword arguments that should be passed to the task function (`message="some notification"`).

## Dependency Injection { #dependency-injection }

Using `BackgroundTasks` also works with the dependency injection system, you can declare a parameter of type `BackgroundTasks` at multiple levels: in a *path operation function*, in a dependency (dependable), in a sub-dependency, etc.

    assertThat(source.read()).isEmpty();

    out.write(data);
    assertThat(source.read()).isEqualTo(data);

    out.close();
  }

  private static boolean isAndroid() {
    return System.getProperty("java.runtime.name", "").contains("Android");
  }

  private static boolean isWindows() {
    return OS_NAME.value().startsWith("Windows");
  }

  /**

            new_value = []
            for item in value:
                if isinstance(item, dict):
                    new_item = _replace_refs(
                        schema=item,
                        old_name_to_new_name_map=old_name_to_new_name_map,
                    )
                    new_value.append(new_item)

                else:
                    new_value.append(item)
            new_schema[key] = new_value

        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/items/": {
                "post": {
                    "summary": "Create Item",
                    "operationId": "create_item_items__post",
                    "requestBody": {
                        "content": {
                            "application/json": {

            "type": "value_error.missing"
        }
    ]
}
```

`needy` は必須のパラメータなので、URLにセットする必要があります:

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy
```

...これはうまくいくでしょう:

```JSON
{
    "item_id": "foo-item",
    "needy": "sooooneedy"
}
```

そして当然、あるパラメータを必須に、別のパラメータにデフォルト値を設定し、また別のパラメータをオプショナルにできます:

{* ../../docs_src/query_params/tutorial006.py hl[10] *}

 * ProjectManager} service.
 * <p>
 * Projects are created using the {@code ProjectBuilder} from a POM file
 * (usually named {@code pom.xml}) on the file system.
 * The {@link #getPomPath()} will point to the POM file and the
 * {@link #getBasedir()} to the directory parent containing the
 * POM file.
 * </p>
 *
 * @since 4.0.0