-Your module functions will often contain the function plugin_name_content(&$a), which defines and returns the page body content.
-They may also contain plugin_name_post(&$a) which is called before the _content function and typically handles the results of POST forms.
-You may also have plugin_name_init(&$a) which is called very early on and often does module initialisation.
+Your module functions will often contain the function plugin_name_content(App $a), which defines and returns the page body content.
+They may also contain plugin_name_post(App $a) which is called before the _content function and typically handles the results of POST forms.
+You may also have plugin_name_init(App $a) which is called very early on and often does module initialisation.