core/Command/Log/Manage.php
/**
	 * @param string $backend
	 * @throws \InvalidArgumentException
	 */
@param string $backend
@throws \InvalidArgumentException
@param string $backend @throws \ InvalidArgumentException
protected function validateBackend($backend) {
		if (!class_exists('OC\\Log\\'.ucfirst($backend))) {
			throw new \InvalidArgumentException('Invalid backend');
		}
	}
protected function validateBackend ( $ backend ) { if ( ! class_exists ( 'OC\\Log\\' . ucfirst ( $ backend ) ) ) { throw new \ InvalidArgumentException ( 'Invalid backend' ) ; } }
@param string $backend
 @throws \InvalidArgumentException
@param string $backend @throws \ InvalidArgumentException