How to Async Get File Size in D - Code Snippet

// Task: Async Get File Size
// Language: D

void async_get_file_size() {
    // Implementation for Async Get File Size
    auto result = ...; // Initialize variable
    // TODO: Implement core logic here
    // Step 1: Prepare data
    // Step 2: Process Async Get File Size
    writeln("Done");
}