How to Async Get File Extension in Racket - Code Snippet

; Task: Async Get File Extension
; Language: Racket

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