TYPO3-coreapi / ext-coreapi

		\TYPO3\CMS\Core\Utility\GeneralUtility::writeFile(PATH_typo3conf . 'LOCK_BACKEND', (string)$redirectUrl);

		if ($redirectUrl === NULL) {

			$message = 'Wrote lock file to \'typo3conf/LOCK_BACKEND\'';

			$this->outputLine($message);

			$this->logger->info($message);

		} else {

			$message = 'Wrote lock file to \'typo3conf/LOCK_BACKEND\' with instruction to redirect to: \'' . $redirectUrl . '\'';

			$this->outputLine($message);

			$this->logger->info($message);

		}

	}

	/**

	public function clearAllActiveOpcodeCacheCommand($fileAbsPath = NULL) {

		$this->cacheApiService->clearAllActiveOpcodeCache($fileAbsPath);

		if ($fileAbsPath !== NULL) {

			$message = sprintf('The opcode cache for the file %s has been cleared', $fileAbsPath);

			$this->outputLine($message);

			$this->logger->info($message);

		} else {

			$message = 'The complete opcode cache has been cleared';

			$this->outputLine($message);

			$this->logger->info($message);

		}

	}

	/**

		$this->outputLine('This may take a while...');

		$result = $this->extensionApiService->updateMirrors();

		if ($result) {

			$message = 'Extension list has been updated.';

			$this->outputLine($message);

			$this->logger->info($message);

		} else {

			$message = 'Extension list already up-to-date.';

			$this->outputLine($message);

			$this->logger->info($message);

		}

	}

	/**