The sortFacetValuesBy parameter controls the order in which facet values are returned for each facet in the response.
This affects data returned by the facets parameter,
but not how values are displayed in the UI.To customize display order, see Facet value display.
Sort facet values by descending count (most frequent values first).
The count is the number of records matching the query with that facet value.
This is the default.