code: public Recipients createRecipient(String accountId, String envelopeId, Recipients recipients) throws ApiException {
      return createRecipient(accountId, envelopeId, recipients, null);
    }
docs: Adds one or more recipients to an envelope.
  Adds one or more recipients to an envelope.  For an in process envelope, one that has been sent and has not been completed or voided, an email is sent to a new recipient when they are reached in the routing order. If the new recipient&#39;s routing order is before or the same as the envelope&#39;s next recipient, an email is only sent if the optional &#x60;resend_envelope&#x60; query string is set to **true**.
  @param accountId The external account number (int) or account ID Guid. (required)
  @param envelopeId The envelopeId Guid of the envelope being accessed. (required)
  @param recipients  (optional)
  @return Recipients