@BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        response = new NtTransQuerySecurityDescResponse(mockConfig);
    }

    @Test
    @DisplayName("Test constructor creates instance with null security descriptor")
    void testConstructor() {
        assertNotNull(response);
        assertNull(response.getSecurityDescriptor());
    }

    @Test

            } else {
                objectName = StringUtil.EMPTY;
            }
        }

        /**
         * Establishes a connection to the GCS service.
         * This method creates a GCS Storage client using environment variables for configuration.
         * This method is synchronized to ensure thread-safe connection initialization.
         *

            } else {
                objectName = StringUtil.EMPTY;
            }
        }

        /**
         * Establishes a connection to the S3 service.
         * This method creates an AWS S3 client using environment variables for configuration.
         * This method is synchronized to ensure thread-safe connection initialization.
         *

    private static final Logger logger = LogManager.getLogger(GcsStorageClient.class);

    private final Storage storage;
    private final String bucket;

    /**
     * Creates a new GcsStorageClient instance.
     *
     * @param projectId the GCS project ID
     * @param bucket the bucket name
     * @param endpoint the custom endpoint URL (optional, for fake-gcs-server etc.)

		return token.Error()
	}

	yes, err := target.isActive()
	if err != nil {
		return err
	}
	if !yes {
		return store.ErrNotConnected
	}

	return nil
}

// NewMQTTTarget - creates new MQTT target.
func NewMQTTTarget(id string, args MQTTArgs, loggerOnce logger.LogOnce) (*MQTTTarget, error) {
	if args.MaxReconnectInterval == 0 {
		// Default interval

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        response = new NtTransNotifyChangeResponse(mockConfig);
    }

    @Test
    @DisplayName("Test constructor creates instance with empty notification list")
    void testConstructor() {
        assertNotNull(response);
        assertNotNull(response.getNotifyInformation());
        assertTrue(response.getNotifyInformation().isEmpty());

      routes = routes,
      attempt = 0,
      tunnelRequest = tunnelRequest,
      connectionSpecIndex = -1,
      isTlsFallback = false,
    )
  }

  /**
   * Returns a request that creates a TLS tunnel via an HTTP proxy. Everything in the tunnel request
   * is sent unencrypted to the proxy server, so tunnels include only the minimum set of headers.

                        break;
                    }
                }
            }
        }
        return buf.toString();
    }

    /**
     * Creates a paging query.
     * @param form The search form.
     */
    protected void createPagingQuery(final SearchForm form) {
        final List<String> pagingQueryList = new ArrayList<>();
        if (form.ex_q != null) {

    public ClassRealm getMavenApiRealm() {
        return mavenApiRealm;
    }

    @Override
    public ClassRealm getMaven4ApiRealm() {
        return maven4ApiRealm;
    }

    /**
     * Creates a new class realm with the specified parent and imports.
     *
     * @param baseRealmId The base id to use for the new realm, must not be {@code null}.
     * @param type The type of the class realm, must not be {@code null}.

Puedes definir esta lógica de *startup* y *shutdown* usando el parámetro `lifespan` de la app de `FastAPI`, y un "context manager" (te mostraré lo que es en un momento).

Comencemos con un ejemplo y luego veámoslo en detalle.

Creamos una función asíncrona `lifespan()` con `yield` así:

{* ../../docs_src/events/tutorial003_py39.py hl[16,19] *}