Is there an example of how Lemur's InputManager should be used?

[pspeed]

You should use InputMapper instead.
InputManager = JME’s primitive input management.
InputMapper = Lemur’s more advanced input management.

Modules

This Lemur Gem uses InputMapper to control a cammera:

Example of an FPS camera

In this thread, it was a reference to Lemur Gems #1: This has also been generalized into MovementState in the open source SiO2 library: GitHub - Simsilica/SiO2: Base pack of useful reusable game code that can help bootstrap any JME game project. MovementState is more powerful because it can be used to move any object and not just the camera directly. For example, if you had a physics-based FPS game then MovementState could move the physics object representing the player and the camera cou…

…you can see from there how to map keys to functions and stuff.

Edit: but note that InputMapper also has some convenience methods that use reflection:
inputMapper.addDelegate(yourFunctionId, theButton, “click”);
…might work.

http://jmonkeyengine-contributions.github.io/Lemur/javadoc/Lemur/com/simsilica/lemur/input/InputMapper.html#addDelegate-com.simsilica.lemur.input.FunctionId-java.lang.Object-java.lang.String-