def all
      query_params = { :rows => 0,
                       'facet.field' => REQUIRED_FIELDS,
                       'facet.mincount' => 10000000,
                       'facet.missing' => true }
      query_params[:fq] = "provider_id:\"#{provider_uri}\"" if
        provider_id.present?

      Krikri::SolrResponseBuilder.new(query_params).response.facets
    end
def all
      query_params = { :rows => 0,
                       'facet.field' => REQUIRED_FIELDS,
                       'facet.mincount' => 10000000,
                       'facet.missing' => true }
      query_params[:fq] = "provider_id:\"#{provider_uri}\"" if
        provider_id.present?

      Krikri::SolrResponseBuilder.new(query_params).response.facets
    end
@example
   ValidationReport.new.all
   => [#<Blacklight::SolrResponse::Facets::FacetField:0x007fce32f46fe8 ...]

 @example
   report = ValidationReport.new
   report.provider_id = '0123'
   report.all
   => [#<Blacklight::SolrResponse::Facets::FacetField:0x007fce32f46fe8 ...]

 @return [Array<Blacklight::SolrResponse::Facets::FacetField>] a report for
   missing values in each of the `REQUIRED_FIELDS`