unable to query sasl bucket

Bucket bucket = cluster.openBucket("travel-sample","password");

QueryResult result = bucket.query(Query.simple("CREATE PRIMARY INDEX ON default:`travel-sample` using gsi&creds=[

{\"user\":\"local:travel-sample\",\"pass\":\"password\"}

]"));

gives syntax error at creds. However curl works

curl -v http://172.23.105.230:8093/query -d 'statement=CREATE PRIMARY INDEX ON default:`travel-sample` using gsi&creds=[

{"user":"local:travel-sample","pass":"password"}

]'