$className */ public function registerProvider(string $className): void; /** * Generate the metadata for one file */ public function generateMetadata(File $file, bool $checkExisting = false): void; /** * Clear the metadata for one file */ public function clearMetadata(int $fileId): void; /** @return array */ public function fetchMetadataFor(string $group, array $fileIds): array; /** * Get the capabilities as an array of mimetype regex to the type provided */ public function getCapabilities(): array; }