Getting large amount of users with CMIS query

String query ="SELECT cm:userName FROM cm:person"; 
ItemIterable<QueryResult> users =this.cmisSession.query(query, false); int pagesize =500;int offset =0;int count =0;boolean done =false; while(!done){
    ItemIterable<QueryResult> page = users.skipTo(offset).getPage(pagesize);for(QueryResult result : page){String username = result.getPropertyValueByQueryName("cm:userName");
        log.debug("found username ["+(++count)+"] : '"+ username +"'");}
    offset += pagesize;
    done =!page.getHasMoreItems();
    log.debug("offset = "+ offset +", done = "+ done);}

found username [1]:'guest'
found username [2]:'admin'
found username [3]:'TestUser_1'
...found username [500]:'TestUser_3278'
offset =500, done =false
found username [501]:'TestUser_3279'
found username [502]:'TestUser_3280'
...found username [1000]:'TestUser_7902'
offset =1000, done =false
offset =1500, done =false
offset =2000, done =false
offset =2500, done =false
...