code: public static IdGenerator getIdGeneratorByType(GenerationType generationType) {
  		if (generationType == null)
  			return null;
  		switch (generationType) {
  		case IDENTITY:
  			return IdentityIdGenerator.INSTANCE;
  		case AUTO:
  			return AutoIdGenerator.INSTANCE;
  		case UUID25:
  			return UUID25Generator.INSTANCE;
  		case UUID32:
  			return UUID32Generator.INSTANCE;
  		case UUID36:
  			return UUID36Generator.INSTANCE;
  		case TIMESTAMP:
  			return TimeStampIdGenerator.INSTANCE;
  		case SNOWFLAKE:
  			return SnowflakeGenerator.INSTANCE;
  		default:
  			return null;
  		}
  	}
docs: Get one of these IdGenerator instance by generationType:
  IDENTITY,AUTO,UUID25,UUID32,UUID36,TIMESTAMP, if not found , return null;