formatFileSize example

'Version', Kernel::VERSION],
            ['Long-Term Support', 4 === Kernel::MINOR_VERSION ? 'Yes' : 'No'],
            ['End of maintenance', Kernel::END_OF_MAINTENANCE.(self::isExpired(Kernel::END_OF_MAINTENANCE) ? ' <error>Expired</>' : ' (<comment>'.self::daysBeforeExpiration(Kernel::END_OF_MAINTENANCE).'</>)')],
            ['End of life', Kernel::END_OF_LIFE.(self::isExpired(Kernel::END_OF_LIFE) ? ' <error>Expired</>' : ' (<comment>'.self::daysBeforeExpiration(Kernel::END_OF_LIFE).'</>)')],
            new TableSeparator(),
            ['<info>Kernel</>'],
            new TableSeparator(),
            ['Type', $kernel::class],
            ['Environment', $kernel->getEnvironment()],
            ['Debug', $kernel->isDebug() ? 'true' : 'false'],
            ['Charset', $kernel->getCharset()],
            ['Cache directory', self::formatPath($kernel->getCacheDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getCacheDir()).'</>)'],
            ['Build directory', self::formatPath($buildDir, $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($buildDir).'</>)'],
            ['Log directory', self::formatPath($kernel->getLogDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getLogDir()).'</>)'],
            new TableSeparator(),
            ['<info>PHP</>'],
            new TableSeparator(),
            ['Version', \PHP_VERSION],
            ['Architecture', (\PHP_INT_SIZE * 8).' bits'],
            ['Intl locale', class_exists(\Locale::class, false) && \Locale::getDefault() ? \Locale::getDefault() : 'n/a'],
            ['Timezone', date_default_timezone_get().' (<comment>'.(new \DateTimeImmutable())->format(\DateTimeInterface::W3C).'</>)'],
            ['OPcache', \extension_loaded('Zend OPcache') && filter_var(\ini_get('opcache.enable'), \FILTER_VALIDATE_BOOL) ? 'true' : 'false'],
            ['APCu', \extension_loaded('apcu') && filter_var(\ini_get('apc.enabled'), \FILTER_VALIDATE_BOOL) ? 'true' : 'false'],
            [