code: def _find_new_forms(self, forms, num, data, files, locale, tz):
          
          fullname = self._get_fullname(num)
          while has_data(data, fullname) or has_data(files, fullname):
              f = self._form_class(
                  data, files=files, locale=locale, tz=tz,
                  prefix=fullname, backref=self._backref
              )
              forms.append(f)
              num += 1
              fullname = self._get_fullname(num)
          return forms
docs: Acknowledge new forms created client-side.