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DrupalSetMessageRector

Fixes deprecated drupal_set_message() calls

-drupal_set_message('example status', 'status');
+\Drupal::messenger()->addStatus('example status');

Configure your rector.php:

<?php

use DrupalRector\Drupal8\Rector\Deprecation\DrupalSetMessageRector;
use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withRules([
        DrupalSetMessageRector::class,
    ]);