static jlong createAnimator(JNIEnv* env, jobject clazz,
        jint propertyRaw, jfloat finalValue) {
    RenderPropertyAnimator::RenderProperty property = toRenderProperty(propertyRaw);
    BaseRenderNodeAnimator* animator = new RenderPropertyAnimator(property, finalValue);
    animator->setListener(&sLifecycleChecker);
    return reinterpret_cast<jlong>( animator );
}
static jlong createCanvasPropertyFloatAnimator(JNIEnv* env, jobject clazz,
        jlong canvasPropertyPtr, jfloat finalValue) {
    CanvasPropertyPrimitive* canvasProperty = reinterpret_cast<CanvasPropertyPrimitive*>(canvasPropertyPtr);
    BaseRenderNodeAnimator* animator = new CanvasPropertyPrimitiveAnimator(canvasProperty, finalValue);
    animator->setListener(&sLifecycleChecker);
    return reinterpret_cast<jlong>( animator );
}
static void start(JNIEnv* env, jobject clazz, jlong animatorPtr, jobject finishListener) {
    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
    if (finishListener) {
        animator->setListener(new AnimationListenerBridge(env, finishListener));
    }
    animator->start();
}
static jlong createCanvasPropertyPaintAnimator(JNIEnv* env, jobject clazz,
        jlong canvasPropertyPtr, jint paintFieldRaw,
        jfloat finalValue) {
    CanvasPropertyPaint* canvasProperty = reinterpret_cast<CanvasPropertyPaint*>(canvasPropertyPtr);
    CanvasPropertyPaintAnimator::PaintField paintField = toPaintField(paintFieldRaw);
    BaseRenderNodeAnimator* animator = new CanvasPropertyPaintAnimator(
            canvasProperty, paintField, finalValue);
    animator->setListener(&sLifecycleChecker);
    return reinterpret_cast<jlong>( animator );
}
static jlong createRevealAnimator(JNIEnv* env, jobject clazz,
        jint centerX, jint centerY, jfloat startRadius, jfloat endRadius) {
    BaseRenderNodeAnimator* animator = new RevealAnimator(centerX, centerY, startRadius, endRadius);
    animator->setListener(&sLifecycleChecker);
    return reinterpret_cast<jlong>( animator );
}