pub trait XRRenderStateMethods<D: DomTypes> {
// Required methods
fn DepthNear(&self) -> Finite<f64>;
fn DepthFar(&self) -> Finite<f64>;
fn GetInlineVerticalFieldOfView(&self) -> Option<Finite<f64>>;
fn GetBaseLayer(&self) -> Option<DomRoot<D::XRWebGLLayer>>;
fn Layers(&self, cx: &mut JSContext, retval: MutableHandle<'_, Value>);
}