code: def set(self, instance, value, **kwargs):
          
          if not value:
              return
          value = value.strip()
          date = DateTime().rfc822()
          user = getSecurityManager().getUser()
          username = user.getUserName()
          divider = "=== {} ({})".format(date, username)
          existing_remarks = instance.getRawRemarks()
          remarks = '\n'.join([divider, value, existing_remarks])
          ObjectField.set(self, instance, remarks)
          # reindex the object after save to update all catalog metadata
          instance.reindexObject()
          # notify object edited event
          event.notify(ObjectEditedEvent(instance))
docs: Adds the value to the existing text stored in the field,
          along with a small divider showing username and date of this entry.