down() for renaming column in laravel migration code example

Example 1: migration rename column laravel

public function up()
{
    Schema::table('posts', function (Blueprint $table) {
        $table->renameColumn('author_ID', 'user_id');
    });
}

Example 2: migration rename column laravel

php artisan make:migration rename_author_id_in_posts_table --table=posts