When SearchParameters.FacetParameters contain one or more parameters, contains the group information and group summation information that would have been obtained _without_ the specified set of facet parameters. This can be useful when e.g. it is desired to display facet information for non-matched (due to facet limiters) facets - in other words, the set of documents the user is 'missing out on'.

public PreFacetInfo PreFacetInfo { get; set; }

public PreFacetInfo PreFacetInfo { get; set; }