Map<Id,cxsrec__cxsCandidate__c> candidateMap = new Map<Id,cxsrec__cxsCandidate__c> ([SELECT Id FROM cxsrec__cxsCandidate__c WHERE cxsrec__E_mail_address__c LIKE '%anontest%' AND Id IN (SELECT cxsrec__Candidate__c FROM cxsrec__cxsHard_criterium__c) LIMIT 100]);
msAnonymizer.AnonymizeCandidatesQueueable job = new msAnonymizer.AnonymizeCandidatesQueueable(candidateMap.keySet());
if(!candidateMap.values().isEmpty()) {
    System.enqueueJob(job);
}