Stores a list of timelines to animate a skeleton's pose over time. The timelines can not be modified through GDScript. Stores a list of timelines to animate a skeleton's pose over time. The timelines can not be modified through GDScript. Applies the animation's timelines to the specified skeleton. The duration of the animation in seconds, which is usually the highest time of all frames in the timeline. The duration is used to know when it has completed and when it should loop back to the start. The animation's name, which is unique across all animations in the skeleton. Returns the timlines making up this animation. Modifying the returned array has no effect on the animation. Returns whether the animation has the timeline with the given [code]ids[/code]. Sets the [code]duration[/code] of the timeline in seconds.