Const
An object that maps from VRMHumanBoneName to its parent VRMHumanBoneName.
Ref: https://github.com/vrm-c/vrm-specification/blob/master/specification/VRMC_vrm-1.0/humanoid.md
An object that maps from VRMHumanBoneName to its parent VRMHumanBoneName.
Ref: https://github.com/vrm-c/vrm-specification/blob/master/specification/VRMC_vrm-1.0/humanoid.md