When I write a patch or a plug-in for Mantis, I often notice that a lot of code is re-used again and again in the different APIs. Especially, API managing objects (bugs, projects, users, etc.) often have the same basic functions, written the same way.
As I wanted to avoid this copy-paste, with always the risk not to modify something that should be, and as I am always worrying of forgetting something somewhere, I wrote a couple of classes which I can re-use for each object.

These classes could be included with the standard Mantis classes.

Hope this can help others.