How to Async Check File Exists in Dart - Code Snippet

// Task: Async Check File Exists
// Language: Dart

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