code: @Pure
  	public static String makeInternalId(UUID uid) {
  		final StringBuilder buf = new StringBuilder("nowhere(?"); //$NON-NLS-1$
  		buf.append(uid.toString());
  		buf.append("?)"); //$NON-NLS-1$
  		return Encryption.md5(buf.toString());
  	}
docs: Compute and replies the internal identifier that may
  be used to create a GeoId from the given identifier.
  The replied identifier is not geolocalized.
  
  @param uid the identifier
  @return the internal identifier.