Fixed file_set edit page

hyrax/app/models/file_set.rb

@@ -44,6 +44,10 @@ class FileSet < ActiveFedora::Base
     "/#{prefix}/#{title.first}"
   end
 
+  def in_works
+    Hyrax.query_service.find_parents(resource: self)
+  end
+
   private
 
   def create_file_set_with_fast_load_meta_data