private static void closeQuietly(CloseMethod closeMethod) {
      try {
        closeMethod.run();
      } catch (Throwable e) {
        LOG.debug("Ignoring thrown exception.", e);
      }
    }
A simplified wrapper over an {@link HFileBlock.BlockIterator} that looks a lot like an
{@link java.util.Iterator}.
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlockHeaderCorruption.java