/**
* Enables a specified assignment method.
*
* @param string $method_id
* The ID of an assignment method.
* @param bool $exclusive
* (optional) Whether to set the method as the only enabled method.
* Defaults to TRUE.
*/
protected function enableAssignmentMethod($method_id, $exclusive = TRUE)
{
if ($exclusive) {
$this->bundle->setEnabledAssignments([$method_id]);
} else {
$enabled = array_keys($this->bundle->getEnabledAssignments());
$enabled[] = $method_id;
$this->bundle->setEnabledAssignments($enabled);
}
}