MigrateMessageInterface.php

<?php

namespace Drupal\migrate;

interface MigrateMessageInterface {
    
    /**
     * Displays a migrate message.
     *
     * @param string $message
     *   The message to display.
     * @param string $type
     *   The type of message, for example: status or warning.
     */
    public function display($message, $type = 'status');

}