@Override
    public String getKeyName(int jmeKey) {
        int glfwKey = GlfwKeyMap.fromJmeKeyCode(jmeKey);
        if (glfwKey == GLFW_KEY_UNKNOWN) {
            return null;
        }

        String result = glfwGetKeyName(glfwKey, 0);
        return result;
    }
Determine the name of the specified key in the current system language.

@param jmeKey the keycode from {@link com.jme3.input.KeyInput}
@return the name of the key, or null if unknown
jme3-lwjgl3/src/main/java/com/jme3/input/lwjgl/GlfwKeyInput.java