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<?php /** * This helper builds the GroupId object for a /mail/send API call * * PHP Version - 5.6, 7.0, 7.1, 7.2 * * @package SendGrid\Mail * @author Elmer Thomas <dx@sendgrid.com> * @copyright 2018 SendGrid * @license https://opensource.org/licenses/MIT The MIT License * @version GIT: <git_id> * @link http://packagist.org/packages/sendgrid/sendgrid */ namespace SendGrid\Mail; /** * This class is used to construct a GroupId object for the /mail/send API call * * @package SendGrid\Mail */ class GroupId implements \JsonSerializable { /** @var $group_id int The unsubscribe group to associate with this email */ private $group_id; /** * Optional constructor * * @param int|null $group_id The unsubscribe group to associate with this email */ public function __construct($group_id = null) { if (isset($group_id)) { $this->setGroupId($group_id); } } /** * Add the group id to a GroupId object * * @param int $group_id The unsubscribe group to associate with this email * * @throws TypeException */ public function setGroupId($group_id) { if (!is_int($group_id)) { throw new TypeException('$group_id must be of type int.'); } $this->group_id = $group_id; } /** * Retrieve the group id from a GroupId object * * @return int */ public function getGroupId() { return $this->group_id; } /** * Return an array representing a GroupId object for the SendGrid API * * @return int */ public function jsonSerialize() { return $this->getGroupId(); } }