How to perform 'Async SHA256 Hash' in Racket.
; Task: Async SHA256 Hash
; Language: Racket
define async_sha256_hash() (
; Implementation for Async SHA256 Hash
define result = ...; ; Initialize variable
; TODO: Implement core logic here
; Step 1: Prepare data
; Step 2: Process Async SHA256 Hash
displayln("Done");
)