code: @Nullable
    public WebSiteResourceBundleSerialized getResourceBundleOfID (@Nullable final String sBundleID)
    {
      if (StringHelper.hasNoText (sBundleID))
        return null;
  
      return m_aRWLock.readLocked ( () -> m_aMapToBundle.get (sBundleID));
    }
docs: Get the serialized resource bundle with the passed ID.
  
  @param sBundleID
  The bundle ID to be resolved. May be <code>null</code>.
  @return <code>null</code> if no such bundle exists.