How to Async Grayscale Image in Dart - Code Snippet

// Task: Async Grayscale Image
// Language: Dart

void asyncGrayscaleImage() {
    // Implementation for Async Grayscale Image
    var result = ...; // Initialize variable
    // TODO: Implement core logic here
    // Step 1: Prepare data
    // Step 2: Process Async Grayscale Image
    print("Done");
}