A Node that may modify Skeleton3D's bone. [SkeletonModifier3D] retrieves a target [Skeleton3D] by having a [Skeleton3D] parent. If there is [AnimationMixer], modification always performs after playback process of the [AnimationMixer]. If [code]true[/code], the [SkeletonModifier3D] will be processing. Sets the influence of the modification. [b]Note:[/b] This value is used by [Skeleton3D] to blend, so the [SkeletonModifier3D] should always apply only 100% of the result without interpolation. Notifies when the modification have been finished. [b]Note:[/b] If you want to get the modified bone pose by the modifier, you must use [method Skeleton3D.get_bone_pose] or [method Skeleton3D.get_bone_global_pose] at the moment this signal is fired.