auto-completion for custom date functions?

[voku]

Hi, I have something like the following code in a class and I wanted to ask if it's possible to have also auto-completion for this use-cases?

PS: thanks for this plugin :+1: :1st_place_medal:

<?php

/**
 * @param string $format
 *
 * @return false|string
 */
function date_format_2($format = 'Y-m-d') {
    return date($format, 1571962614);
}

echo date_format_2('Y-m-d');