default DigitalActionState getDigitalActionState( String actionName ){
        return getDigitalActionState(actionName, null);
    }
Gets the current state of the action (abstract version of a button press).

This is called for digital style actions (a button is pressed, or not)

This method is commonly called when it's not important which hand the action is bound to (e.g. if a button press
is opening your inventory that could be bound to either left or right hand and that would not matter).

If the handedness matters use {@link #getDigitalActionState(String, String)}

{@link #registerActionManifest} must have been called before using this method.

@param actionName The name of the action. Will be something like /actions/main/in/openInventory
@return the DigitalActionState that has details on if the state has changed, what the state is etc.
jme3-vr/src/main/java/com/jme3/input/vr/VRInputAPI.java