code: function createMailing($name, $subject, $deprecatedParameter = false, $type = "regular")
      {
          $queryParameters = array(
              'name' => urlencode($name),
              'subject' => urlencode($subject),
              'type' => urlencode($type),
          );
  
          return $this->post('mailings', "", $queryParameters);
      }
docs: Creates a new mailing.
  @param string $name
  the name of the mailing
  @param string $subject
  the subject of the mailing
  @param bool $deprecatedParameter
  this parameter was never used by the API
  @param string $type
  the type of the mailing, which can be one of 'doi', 'trigger', or 'regular'.
  @return \em com_maileon_api_MaileonAPIResult
  the result of the operation