How to Async Get File Extension in Perl - Code Snippet

# Task: Async Get File Extension
# Language: Perl

sub async_get_file_extension() {
    # Implementation for Async Get File Extension
    my $ result = ...; # Initialize variable
    # TODO: Implement core logic here
    # Step 1: Prepare data
    # Step 2: Process Async Get File Extension
    print("Done");
}