How do you use {{ tag | link_to_add_tag: tag }}

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Trying to make multiple filters work together in my shop so that you can choose an option in each of the three filters and you would see only the products that match all three. Example: I want to find all shirts that are Bella Canvas brand, Adventure themed, and Cream colored. 

The url i'm trying to make is: ""

The way to do this should be to use {{ tag | link_to_add_tag: tag }} but I'm not sure how to use it.

Any help is appreciated!