Trait GamepadMethods 
Source pub trait GamepadMethods<D>{
    // Required methods
    fn Id(&self) -> DOMString;
    fn Index(&self) -> i32;
    fn Connected(&self) -> bool;
    fn Timestamp(&self) -> Finite<f64>;
    fn Mapping(&self) -> DOMString;
    fn Axes(&self, cx: JSContext) -> TypedArray<Float64, *mut JSObject>;
    fn Buttons(&self) -> Root<Dom<<D as DomTypes>::GamepadButtonList>>;
    fn VibrationActuator(
        &self,
    ) -> Root<Dom<<D as DomTypes>::GamepadHapticActuator>>;
    fn Hand(&self) -> GamepadHand;
    fn GetPose(&self) -> Option<Root<Dom<<D as DomTypes>::GamepadPose>>>;
}