output: #fixed code
                                  @Test
      public void shouldBeReadOnly() throws Exception {
          final File tempFile = File.createTempFile("mapped", "bytes");
          tempFile.deleteOnExit();
          try (RandomAccessFile raf = new RandomAccessFile(tempFile, "rw")) {
              raf.setLength(4096);
              assertTrue(tempFile.setWritable(false));
              try (MappedBytes mappedBytes = MappedBytes.readOnly(tempFile)) {
                  assertTrue(mappedBytes.isBackingFileReadOnly());
              }
          }
  
      }
input: #vulnerable code 
                                  @Test
      public void shouldBeReadOnly() throws Exception {
          final File tempFile = File.createTempFile("mapped", "bytes");
          final RandomAccessFile raf = new RandomAccessFile(tempFile, "rw");
          raf.setLength(4096);
          assertTrue(tempFile.setWritable(false));
          final MappedBytes mappedBytes = MappedBytes.readOnly(tempFile);
  
          assertTrue(mappedBytes.
                  isBackingFileReadOnly());
          mappedBytes.release();
      } 
                              #location 5 
                              #vulnerability type RESOURCE_LEAK