How to perform 'Async Base64 Encode' in Rust.
// Task: Async Base64 Encode
// Language: Rust
fn async_base64_encode() {
// Implementation for Async Base64 Encode
let result = ...; // Initialize variable
// TODO: Implement core logic here
// Step 1: Prepare data
// Step 2: Process Async Base64 Encode
println!("Done");
}