Call { _site_root } inside a plugin?

Not a huge issue, but could come in handy later. I'm just curious if this is possible, it would clean up some of my code.

From the plugin, I'd like this to be possible:

return '<a href="'.{ _site_root }.'" class="my_class" target="_blank">'.$label.'</a>';

Obviously this doesn't work, but I don't know how to call the { _site_root } from inside this plugin because it's not in the documentation. Is there a way for me to store the site root in a $var ? I do need this to be a variable so that the plugin works in both a localhost staging environment and on the live site.

Answered by Ethan Beyer!
>>>>>>> Answered <<<<<<<
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