How to Async Get Environment Variable in D - Code Snippet

// Task: Async Get Environment Variable
// Language: D

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