static void GetAttributeValue ( [FStackAttributeContainer](API\Runtime\Engine\Animation\FStackAttributeContainer) & OutAttributes, const [FCompactPoseBoneIndex](API\Runtime\AnimationCore\FCompactPoseBoneIndex) & PoseBoneIndex, const [FAnimatedBoneAttribute](API\Runtime\Engine\Animation\AnimData\FAnimatedBoneAttribute) & Attribute, const [FAnimExtractContext](API\Runtime\Engine\Animation\FAnimExtractContext) & ExtractionContext )