How can indexes be checked if they exist in a Laravel migration? : <p>Trying to check if a unique index exists on a table when preparing a migration, how can it be achieved?</p>

<pre><code>Schema::table('persons', function (Blueprint $table) {
    if ($table-&gt;hasIndex('persons_body_unique')) {
        $table-&gt;dropUnique('persons_body_unique');
    }
})
</code></pre>

<p>Something that looks like the above. (apparently, hasIndex() doesn't exist)</p>
