Controls whether highly similar jobs are returned next to each other in the search results. Jobs are identified as highly similar based on their titles, job categories, and locations. Highly similar results are clustered so that only one representative job of the cluster is displayed to the job seeker higher up in the results, with the other jobs being displayed lower down in the results.

DIVERSIFICATION_LEVEL_UNSPECIFIED The diversification level isn't specified. By default, jobs with this enum are ordered according to SIMPLE diversifying behavior.
DISABLED Disables diversification. Jobs that would normally be pushed to the last page would not have their positions altered. This may result in highly similar jobs appearing in sequence in the search results.
SIMPLE Default diversifying behavior. The result list is ordered so that highly similar results are pushed to the end of the last page of search results.