code: def only_trashed(cls):
          
          instance = cls()
  
          column = instance.get_qualified_deleted_at_column()
  
          return instance.new_query_without_scope(SoftDeletingScope()).where_not_null(
              column
          )
docs: Get a new query builder that only includes soft deletes
  
          :type cls: orator.orm.model.Model
  
          :rtype: orator.orm.builder.Builder