* Checks if directory change notifications are enabled for cache invalidation
     * @return true if change notifications are enabled
     */
    public boolean isNotificationEnabled() {
        return notificationEnabled;
    }

    /**
     * Enables or disables directory change notifications
     * @param notificationEnabled true to enable change notifications
     */

    /**
     * construct graph from a "dirty" tree
     *
     * @param tree "dirty" tree root
     * @param versionedVertices true if graph nodes should be versioned (different versions -> different nodes)
     * @param scopedVertices true if graph nodes should be versioned and scoped
     * (different versions and/or scopes -> different nodes)
     *
     */

https://www.external.org/events/invoices/2expen51ve
```

з JSON-тілом на кшталт:

```JSON
{
    "description": "Payment celebration",
    "paid": true
}
```

і очікуватиме відповідь від того *зовнішнього API* з JSON-тілом на кшталт:

```JSON
{
    "ok": true
}
```

/// tip | Порада

  <dependencies>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>t07-d</artifactId>
      <version>1.1</version>
      <type>jar</type>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
  </dependencies>

      if (collection.add(value)) {
        totalSize++;
        map.put(key, collection);
        return true;
      } else {
        throw new AssertionError("New Collection violated the Collection spec");
      }
    } else if (collection.add(value)) {
      totalSize++;
      return true;
    } else {
      return false;
    }
  }

    "https://localhost.tiangolo.com",
    "http://localhost",
    "http://localhost:8080",
]

app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


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

     * the local SMB network. If this <code>SmbResource</code> refers to the root
     * <code>smb://</code> resource <code>true</code> is always returned. If
     * this <code>SmbResource</code> is a traditional file or directory, it will
     * be queried for on the specified server as expected.
     *
     * @return <code>true</code> if the resource exists or is alive or
     *         <code>false</code> otherwise

     */
    public void store(final DuplicateHost duplicateHost) {

        duplicateHostBhv.insertOrUpdate(duplicateHost, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

    }

    /**
     * Deletes the specified duplicate host configuration from the system.
     *
     * <p>This operation permanently removes the duplicate host configuration and

    @Override
    protected void prepareCoreDirection(final FwCoreDirection direction) {
        // this configuration is on fess_env.properties because this is true only when development
        direction.directDevelopmentHere(fessConfig.isDevelopmentHere());

        // titles of the application for logging are from configurations

      Protocol.H2_PRIOR_KNOWLEDGE
    } else {
      Protocol.HTTP_2
    }

  @Volatile
  private var canceled = false

  override val isResponseComplete: Boolean
    get() = stream?.isSourceComplete == true

  override val socket: Socket
    get() = stream!!

  override fun createRequestBody(
    request: Request,
    contentLength: Long,
  ): Sink = stream!!.sink