How to Async Get File Extension in Nim - Code Snippet

# Task: Async Get File Extension
# Language: Nim

proc async_get_file_extension() =
    # Implementation for Async Get File Extension
    var result = ...; # Initialize variable
    # TODO: Implement core logic here
    # Step 1: Prepare data
    # Step 2: Process Async Get File Extension
    echo("Done");