How to perform 'Async Fibonacci Sequence' in Groovy.
// Task: Async Fibonacci Sequence
// Language: Groovy
def async_fibonacci_sequence() {
// Implementation for Async Fibonacci Sequence
def result = ...; // Initialize variable
// TODO: Implement core logic here
// Step 1: Prepare data
// Step 2: Process Async Fibonacci Sequence
println("Done");
}