[icambron]

I think by dynamic, they mean that you can't really edit the annotation at runtime. In this case, it would be that you can't choose the HTTP verb using an if statement, for example. Other annotations have parameters, which you might also want to tweak.

Annotations trade flexibility for succinctness and readability. That's often a great reasonable tradeoff and a good place to start, but you might find yourself ripping them out later.