docs: public GVRSkeleton createSkeleton(List<String> boneNames)
      {
          int numBones = boneNames.size();
          GVRSceneObject root = (GVRSceneObject) mTarget;
          mSkeleton = new GVRSkeleton(root, boneNames);
          for (int boneId = 0; boneId < numBones; ++boneId)
          {
              mSkeleton.setBoneOptions(boneId, GVRSkeleton.BONE_ANIMATE);
          }
          mBoneChannels = new GVRAnimationChannel[numBones];
          return mSkeleton;
      }