def include_depositor_facet(solr_parameters)
      solr_parameters[:"facet.field"].concat([DepositSearchBuilder.depositor_field])

      # default facet limit is 10, which will only show the top 10 users.
      # As we want to show all user deposits, so set the facet.limit to the
      # the number of users in the database
      solr_parameters[:"facet.limit"] = ::User.count

      # we only want the facte counts not the actual data
      solr_parameters[:rows] = 0
    end
def include_depositor_facet(solr_parameters)
      solr_parameters[:"facet.field"].concat([DepositSearchBuilder.depositor_field])

      # default facet limit is 10, which will only show the top 10 users.
      # As we want to show all user deposits, so set the facet.limit to the
      # the number of users in the database
      solr_parameters[:"facet.limit"] = ::User.count

      # we only want the facte counts not the actual data
      solr_parameters[:rows] = 0
    end
includes the depositor_facet to get information on deposits.
 use caution when combining this with other searches as it sets the rows to
 zero to just get the facet information
 @param solr_parameters the current solr parameters