How to Async Fibonacci Sequence in Tcl - Code Snippet

# Task: Async Fibonacci Sequence
# Language: Tcl

proc async_fibonacci_sequence() {
    # Implementation for Async Fibonacci Sequence
    set result = ...; # Initialize variable
    # TODO: Implement core logic here
    # Step 1: Prepare data
    # Step 2: Process Async Fibonacci Sequence
    puts("Done");
}