Rake task for purge_orphans

[srappel]

There is a defined rake task to purge orphaned sidecars, but when I run it, I get some errors:

    desc "Sidecars - Purge orphans: Destroy orphaned sidecar Active Record objects"
    # When a Sidecar object exists,
    # but it's corresponding SolrDocument is no longer in the Solr index.
    task purge_orphans: [:environment] do
      # Remove all sidecars that have no corresponding SolrDocument
      sidecars = Blacklight::Allmaps::Sidecar.all
      sidecars.each do |sc|
        ::SolrDocument.find(sc.document_id)
      rescue
        sc.destroy
        puts "orphaned / #{sc.document_id} / destroyed"
      end
    end

Expected behavior is that orphaned sidecars would be purged.

Actual behavior is that orphans are not purged with the following error message:

NoMethodError: undefined method `document_id' for #<Blacklight::Allmaps::Sidecar id: 1, solr_document_id: "6cd985a1-1b1f-4d72-be9c-d64e5b3cdb30", document_type: "SolrDocument", manifest_id: nil, annotated: false, allmaps_id: nil, iiif_manifest: nil, allmaps_annotation: nil, solr_version: 1807289517394100224, created_at: "2024-05-15 19:11:52.838121000 +0000", updated_at: "2024-08-13 16:17:50.042777000 +0000"> (NoMethodError)
Did you mean? document_type