code: public RecipientsUpdateSummary updateRecipients(String accountId, String templateId, TemplateRecipients templateRecipients) throws ApiException {
      return updateRecipients(accountId, templateId, templateRecipients, null);
    }
docs: Updates recipients in a template.
  Updates recipients in a template.   You can edit the following properties: &#x60;email&#x60;, &#x60;userName&#x60;, &#x60;routingOrder&#x60;, &#x60;faxNumber&#x60;, &#x60;deliveryMethod&#x60;, &#x60;accessCode&#x60;, and &#x60;requireIdLookup&#x60;.
  @param accountId The external account number (int) or account ID Guid. (required)
  @param templateId The ID of the template being accessed. (required)
  @param templateRecipients  (optional)
  @return RecipientsUpdateSummary