Implementing the new Reactions feature on your content items is relatively straightforward. In your content item class, add the \IPS\Content\Reactable trait to your class. And then defined a reactionType() method within your content class - note that this is required so as to differentiate your content from the rest of the applications installed - this is equivalent to the $reputationType property in IPS 4.1 and, if your application implemented reputation previously, should be the same as the pr