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.