output: #fixed code
                                  @Test
      public void testSimpleBookieLedgerMapping() throws Exception {
  
          for (int i = 0; i < numberOfLedgers; i++) {
              createAndAddEntriesToLedger().close();
          }
  
          BookieLedgerIndexer bookieLedgerIndex = new BookieLedgerIndexer(
                  ledgerManager);
  
          Map<String, Set<Long>> bookieToLedgerIndex = bookieLedgerIndex
                  .getBookieToLedgerIndex();
  
          assertEquals("Missed few bookies in the bookie-ledger mapping!", 3,
                  bookieToLedgerIndex.size());
          Collection<Set<Long>> bk2ledgerEntry = bookieToLedgerIndex.values();
          for (Set<Long> ledgers : bk2ledgerEntry) {
              assertEquals("Missed few ledgers in the bookie-ledger mapping!", 3,
                      ledgers.size());
              for (Long ledgerId : ledgers) {
                  assertTrue("Unknown ledger-bookie mapping", ledgerList
                          .contains(ledgerId));
              }
          }
      }
input: #vulnerable code 
                                  @Test
      public void testSimpleBookieLedgerMapping() throws Exception {
          LedgerManagerFactory newLedgerManagerFactory = LedgerManagerFactory
                  .newLedgerManagerFactory(baseConf, zkc);
          LedgerManager ledgerManager = newLedgerManagerFactory
                  .newLedgerManager();
  
          List<Long> ledgerList = new ArrayList<Long>(3);
          LedgerHandle lh = createAndAddEntriesToLedger();
          lh.close();
          ledgerList.add(lh.getId());
  
          lh = createAndAddEntriesToLedger();
          lh.close();
          ledgerList.add(lh.getId());
  
          lh = createAndAddEntriesToLedger();
          lh.close();
          ledgerList.add(lh.getId());
  
          BookieLedgerIndexer bookieLedgerIndex = new BookieLedgerIndexer(
                  ledgerManager);
  
          Map<String, Set<Long>> bookieToLedgerIndex = bookieLedgerIndex
                  .getBookieToLedgerIndex();
  
          assertEquals("Missed few bookies in the bookie-ledger mapping!", 3,
                  bookieToLedgerIndex.size());
          Collection<Set<Long>> bk2ledgerEntry = bookieToLedgerIndex.values();
          for (Set<Long> ledgers : bk2ledgerEntry) {
              assertEquals("Missed few ledgers in the bookie-ledger mapping!", 3,
                      ledgers.size());
              for (Long ledgerId : ledgers) {
                  assertTrue("Unknown ledger-bookie mapping", ledgerList
                          .contains(ledgerId));
              }
          }
      } 
                              #location 25 
                              #vulnerability type RESOURCE_LEAK