code: private void initAliases() throws Exception {
  		if (aliases != null && aliases.length > 0) {
  			for (String aliasIndex : aliases) {
                  Tuple<String, String> aliasIndexSplitted = computeAlias(aliasIndex);
  				createAlias(client.getLowLevelClient(), aliasIndexSplitted.v2(), aliasIndexSplitted.v1());
  			}
  		}
      }
docs: Init aliases if needed.