code: public static void returnDecompressor(Decompressor decompressor) {
      if (decompressor == null) {
        return;
      }
      decompressor.reset();
      payback(decompressorPool, decompressor);
    }
docs: Return the {@link Decompressor} to the pool.
  
  @param decompressor the <code>Decompressor</code> to be returned to the
  pool