code: public void reinitialize ()
    {
      m_aRWLock.writeLocked ( () -> {
        m_aMimeTypeContents.clear ();
        _registerDefaultMimeTypeContents ();
      });
  
      if (LOGGER.isDebugEnabled ())
        LOGGER.debug ("Reinitialized " + MimeTypeDeterminator.class.getName ());
    }
docs: Reset the MimeTypeContent cache to the initial state.
  
  @see #registerMimeTypeContent(MimeTypeContent)
  @see #unregisterMimeTypeContent(MimeTypeContent)