appendToTiff method
Implementation
@override
Future<String?> appendToTiff(String imagePath, String targetTiffPath) =>
_sdkCall('APPEND_TIFF_FAILED', () async {
final sdk = await _readySdk();
final source = await _fetchBytes(imagePath);
final target = await _fetchBytes(targetTiffPath);
final response = await sdk.appendToTiff(source, target).toDart;
return _objectUrl(_dataOrThrow(response), _DocumentKind.tiff.mimeType);
});