A string-represented enumeration of the job search mode. The service operate differently for different modes of service.
The mode of the search method isn't specified. The default search behavior is identical to JOB_SEARCH search behavior.
The job search matches against all jobs, and featured jobs (jobs with promotionValue > 0) are not specially handled.
The job search matches only against featured jobs (jobs with a promotionValue > 0). This method doesn't return any jobs having a promotionValue <= 0. The search results order is determined by the promotionValue (jobs with a higher promotionValue are returned higher up in the search results), with relevance being used as a tiebreaker.