def save_habtm_association?(assoc)
      @record.class.paper_trail_save_join_tables.include?(assoc.name) ||
        ::PaperTrail.request.enabled_for_model?(assoc.klass)
    end
def save_habtm_association?(assoc)
      @record.class.paper_trail_save_join_tables.include?(assoc.name) ||
        ::PaperTrail.request.enabled_for_model?(assoc.klass)
    end
Returns true if the given HABTM association should be saved.
 @api private