code: public static void closeQuietly( Closeable closeable ) {
          if (closeable == null) {
              return;
          }
          try {
              closeable.close();
          } catch (Throwable t) {
              LOGGER.debug(t, "Ignored error at closing stream");
          }
      }
docs: Closes the closable silently. Any exceptions are ignored.
  
  @param closeable the closeable instance; may be null