In Chapter 2, Creating Your First Module, we briefly looked at how you can work with links programmatically and how to build and render them in two different ways. We also noted that it's better to use the #link render element (and we now understand what this is) if we want the link to be alterable somewhere down the line. Now, let's take a look at how we can build a list of links using the helpful links theme hook.
The links theme hook takes an array of links to be rendered, optional attributes, an optional heading, and a flag to set the active class dynamically. It then uses the links.html.twig template to construct a <ul>, much like the item_list hook.
The most important variable here is the array of links, as it needs to contain ...
