How to check the value of the Meta Pattern plugin?

Question

Online shopping

There is a plugin:
https://www.webasyst.ru/store/plugin/shop/bernacki...
How to check the product title/meta tag type?
It can have two values:
- default (taken directly from the product)
- use pattern (taken from the plugin)
I need to output from the product if it is not empty and, if it is empty, then use the plugin.
Output template:
{$wa->title()|escape}
{$wa->meta('keywords')|escape}
{$wa->meta('description')|escape}