code: public static UsingIndex INDEX(String indexName) {
  		UsingIndex ret = UFactory.index(indexName);
  		ASTNode an = APIObjectAccess.getAstNode(ret);
  		an.setClauseType(ClauseType.USING_INDEX);
  		return ret;
  	}
docs: <div color='red' style="font-size:24px;color:red"><b><i><u>JCYPHER</u></i></b></div>
  <div color='red' style="font-size:18px;color:red"><i>set the name of the index to use</i></div>
  <div color='red' style="font-size:18px;color:red"><i>e.g. <b>USING.INDEX("Person")</b>...</i></div>
  <br/>