Set Message with a link as an argument
Need to output a message with a link in the text?
$link = Link::createFromRoute('Link Title', 'my_module.my_route', [
'argument' => 'argument value',
]);
$m_args = ['%message_link' => $link->toString()];
\Drupal::messenger()->addStatus(t('Here is a message, and here is a link. %message_link', $m_args));