How to Async Check Leap Year in D - Code Snippet

// Task: Async Check Leap Year
// Language: D

void async_check_leap_year() {
    // Implementation for Async Check Leap Year
    auto result = ...; // Initialize variable
    // TODO: Implement core logic here
    // Step 1: Prepare data
    // Step 2: Process Async Check Leap Year
    writeln("Done");
}