Answered mod_snippet error on site cache clear

Here's a weird one. Whenever I clear the site cache, then visit the homepage of my site I get the error

Fatal error: Call to undefined method modX::getMicroTime() in /[path]/core/cache/includes/elements/modsnippet/22.include.cache.php on line 5

Each time, I then have to manually edit that file to change reference to $modx->getMicroTime() to microtime(true)... but surely there's a proper fix?

I think the snippet is making a call to a modx call which was probably long deprecated. Editing snippet 22 and modding it to use microtime() has done the trick and should permanently fix it.

I'm glad you got it sorted, but what was the snippet?