File::determineMimeType( string|null $providedMimeType, string|null $extractedMimeType, string|null $pathOrUrl ): WordPress\AiClient\Files\ValueObjects\MimeType

311    private function determineMimeType(?string $providedMimeType, ?string $extractedMimeType, ?string $pathOrUrl): MimeType312    {313        // Prefer explicitly provided MIME type314        if ($providedMimeType !== null) {315            return new MimeType($providedMimeType);316        }317        // Use extracted MIME type from data URI318        if ($extractedMimeType !== null) {319            return new MimeType($extractedMimeType);320        }321        // Try to determine from file extension322        if ($pathOrUrl !== null) {323            $parsedUrl = parse_url($pathOrUrl);324            $path = $parsedUrl['path'] ?? $pathOrUrl;325            // Remove query string and fragment if present326            $cleanPath = strtok($path, '?#');327            if ($cleanPath === \false) {328                $cleanPath = $path;329            }330            $extension = pathinfo($cleanPath, \PATHINFO_EXTENSION);331            if (!empty($extension)) {332                try {333                    return MimeType::fromExtension($extension);334                } catch (InvalidArgumentException $e) {335                    // Extension not recognized, continue to error336                    unset($e);337                }338            }339        }340        throw new InvalidArgumentException('Unable to determine MIME type. Please provide it explicitly.');341    }