code: public void sortedUUIDGenerator(String name, Integer sortedLength, Integer uuidLength) {
  		checkReadOnly();
  		DialectException.assureNotNull(name);
  		if (this.getIdGenerator(GenerationType.SORTED_UUID, name) != null)
  			throw new DialectException("Duplicated sortedUUIDGenerator name '" + name + "'");
  		idGenerators.add(new SortedUUIDGenerator(name, sortedLength, uuidLength));
  	}
docs: Add a Sequence Generator, note: not all database support sequence