How to perform 'Async Count Vowels' in VisualBasic.
' Task: Async Count Vowels
' Language: VisualBasic
Sub async_count_vowels()
' Implementation for Async Count Vowels
Dim result = ...; ' Initialize variable
' TODO: Implement core logic here
' Step 1: Prepare data
' Step 2: Process Async Count Vowels
Console.WriteLine("Done");
End Sub