Implement all TODOs

src/main/java/dev/banking/service/BankingSystem.java

@@ -2,22 +2,9 @@ package dev.banking.service;
 
 import dev.banking.model.*;
 import dev.banking.processor.TransactionProcessor;
-
 import java.util.List;
 import java.util.concurrent.ExecutorService;
 
-/**
- * Dispatches a list of transactions to a shared ExecutorService
- * for concurrent (asynchronous) processing.
- *
- * Each transaction is submitted as an independent task and may
- * be executed in parallel depending on thread availability.
- *
- * No ordering guarantees are provided between transactions.
- *
- * Lifecycle management of the ExecutorService (creation,
- * shutdown, termination) is handled outside this class.
- */
 public class BankingSystem {
 
     private final ExecutorService executor;
@@ -34,13 +21,10 @@ public class BankingSystem {
     public void processTransactions(
             List<Transaction> transactions
     ) {
-
         for (Transaction tx : transactions) {
-
             executor.submit(() -> {
                 processor.process(tx);
             });
-
         }
     }
 }