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// http://www.w3.org/TR/web-animations/#the-animatable-interface
// http://www.w3.org/TR/web-animations/#extensions-to-the-element-interface

// TODO(dstockwell): This should be an Animatable interface, where Element
// implements Animatable. The interface also has several changes:
// https://w3c.github.io/web-animations/#the-animatable-interface

partial interface Element {
    // FIXME: Union types with dictionary type members doesn't work (yet).
    // Animation animate((EffectModel or sequence<Dictionary>)? effect, optional (double or KeyframeEffectOptions) timing);
    [Measure, RaisesException] Animation animate((EffectModel or sequence<Dictionary>)? effect, optional double timing);
    [Measure, RaisesException] Animation animate((EffectModel or sequence<Dictionary>)? effect, KeyframeEffectOptions timing);
    [RuntimeEnabled=WebAnimationsAPI] sequence<Animation> getAnimations();
};