The module as it stands doesn't do much. In fact, it does nothing. However, do pat yourself on the back, as you have created your first Drupal 8 module. Before we move on to the interesting stuff we planned out, let's implement our first hook responsible for providing some helpful info about our module.
As we hinted at in the first chapter, when Drupal encounters an event for which there is a hook (and there are hundreds of such events), it will look through all of the modules for matching hook implementations. Now, how does it find the matching implementations? It looks for the functions that are named in the module_name_hook_name format, where hook_name is replaced by the name of the hook being implemented. ...
