Trying to create a basic MainWP extension... documentation is wrong

[kwcjr (Keith Crain)]

How To Send Custom Persistent & Updateable Admin Notifications to Select Child Sites from MainWP Dashboard

What’s It do? This snippet will allow you to create persistent & updateable custom admin notifications for select Child Sites & keep the connection so that they may be updated on the fly. MainWP allows you to block all pages that are on the Front-End, however this doesn’t mean that we can not tap into this in order to send out custom admin notices at will to any Child Site connected to our MainWP Dashboard. How to do it? We will be utilizing the WP-json API that is already built into each WP…