Create and dispatch an event in Magento

It’s very simple to dispatch an event in Magento. When would you want to do this?

Events are broadcast any time you’d like an action carried out that isn’t dependent upon a response. For example, you might send out an event when a specific page is viewed, similar to something like Google Analytics. You’re basically saying “here’s an event, and it’s up to you to do as you see fit.”

Go to the blog post detail class, and create a new private property that is of type ManagerInterface from Magento\Framework\Event. Sometimes if a class name is so generic, such as this one named Manager...