How to perform 'Base64 Decode' in OCaml.
(* Task: Base64 Decode
(* Language: OCaml
let base64_decode() =
(* Implementation for Base64 Decode
let result = ...; (* Initialize variable
(* TODO: Implement core logic here
(* Step 1: Prepare data
(* Step 2: Process Base64 Decode
print_endline("Done");
;;