.collect(Collectors.toSet());
    }

    private ClassRealm newRealm(String id) {
        synchronized (world) {
            String realmId = id;

            Random random = new Random();

            while (true) {
                try {
                    ClassRealm classRealm = world.newRealm(realmId, null);

                    logger.debug("Created new class realm {}", realmId);

            throw new FessSystemException("Could not find extractorFactory.");
        }
        Extractor extractor = extractorFactory.getExtractor(responseData.getMimeType());
        if (extractor == null) {
            extractor = ComponentUtil.getComponent("tikaExtractor");
            if (extractor == null) {
                throw new FessSystemException("Could not find tikaExtractor.");
            }
        }

それ以外は **FastAPI** が処理します。

実行して [http://localhost:8000/v1/](http://localhost:8000/v1/) にアクセスすると、Flask からのレスポンスが表示されます:

```txt
Hello, World from Flask!
```

さらに [http://localhost:8000/v2](http://localhost:8000/v2) にアクセスすると、FastAPI からのレスポンスが表示されます:

```JSON
{
    "message": "Hello World"
}

        MAX_FD=$( ulimit -H -n ) ||
            warn "Could not query maximum file descriptor limit"
    esac
    case $MAX_FD in  #(
      '' | soft) :;; #(
      *)
        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
        # shellcheck disable=SC2039,SC3045
        ulimit -n "$MAX_FD" ||
            warn "Could not set maximum file descriptor limit to $MAX_FD"
    esac
fi

from fastapi import FastAPI, Request

app = FastAPI(root_path="/api/v1")


@app.get("/app")
def read_main(request: Request):

from .main import app

client = TestClient(app)


def test_read_main():
    response = client.get("/")
    assert response.status_code == 200

    Mac mac = Mac.getInstance("HmacSHA1");
    mac.init(SHA1_KEY);
    mac.update("hello".getBytes(UTF_8));
    mac.update("world".getBytes(UTF_8));

    assertEquals(
        HashCode.fromBytes(mac.doFinal()),
        hmacSha1(SHA1_KEY).newHasher().putString("hello", UTF_8).putString("world", UTF_8).hash());
  }

  public void testMultipleUpdatesDoFinal() throws Exception {
    Mac mac = Mac.getInstance("HmacSHA1");

app = FastAPI()

app.add_middleware(
    TrustedHostMiddleware, allowed_hosts=["example.com", "*.example.com"]
)


@app.get("/")
async def main():

class Settings(BaseSettings):
    openapi_url: str = "/openapi.json"


settings = Settings()

app = FastAPI(openapi_url=settings.openapi_url)


@app.get("/")
def root():

        Node node = doResolve(link, classMetaData, listener);
        if (node != null) {
            return node;
        }

        listener.warning(String.format("Could not convert Javadoc link '%s'", link));
        Element element = document.createElement("UNHANDLED-LINK");
        element.appendChild(document.createTextNode(link));
        return element;
    }