code: public static void close(final AutoCloseable closeable)
      {
          try
          {
              if (null != closeable)
              {
                  closeable.close();
              }
          }
          catch (final Exception e)
          {
              LangUtil.rethrowUnchecked(e);
          }
      }
docs: Close a {@link java.lang.AutoCloseable} dealing with nulls and exceptions.
  This version re-throws exceptions as runtime exceptions.
  
  @param closeable to be closed.