wp_tag_cloud() function - how to declare?

Question

WordPress

I'm trying to display a tag cloud on the main page now.
Google - everywhere they write that it's better to do this with the wp_tag_cloud() function, which is in functions.php , but only in my theme this file is almost empty, and this function is not there.
Can anyone share the code for the standard declaration of this function?

Answer 1

So she is in vp and not in the subject