How to check if canonical is set in 1c-bitrix?

Question

HTML

the crux of the problem is as follows.
I output to Bitrix in head The fact is that Bitrix already has a built-in tool for canonical output, and it turns out that on some pages two links rel='canonical' are displayed, how to check if Bitrix has set canonical or not? <link rel='canonical' href='некая страница">

Answer 1

I was thinking like: , but then what is the function? if (function_exists('название'))

Answer 2

In the infoblock settings