isModelInstalled method
Checks if a model is installed and valid
Implementation
@override
Future<bool> isModelInstalled(ModelSpec spec) async {
await _ensureInitialized();
try {
final result = await UnifiedDownloadEngine.isModelInstalled(spec);
debugPrint('UnifiedModelManager: Model ${spec.name} installed: $result');
return result;
} catch (e) {
debugPrint('UnifiedModelManager: Failed to check if model installed - ${spec.name}: $e');
return false;
}
}