How to perform 'Async Count Vowels' in PowerShell.
# Task: Async Count Vowels
# Language: PowerShell
function async_count_vowels() {
# Implementation for Async Count Vowels
$ result = ...; # Initialize variable
# TODO: Implement core logic here
# Step 1: Prepare data
# Step 2: Process Async Count Vowels
Write-Host("Done");
}