How to Async Get Audio Duration in Tcl - Code Snippet

# Task: Async Get Audio Duration
# Language: Tcl

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