public SpatialTrack toJmeSpatialTrack() {
        return (SpatialTrack) toJmeTrackInternal(-1, null);
    }
Generate a {@link BoneTrack} from the animation data, for the given
boneIndex.

@param boneIndex The bone index for which track data is generated for.
@param inverseBindPose Inverse bind pose of the bone (in world space).
@return A BoneTrack containing the animation data, for the specified
boneIndex.
jme3-plugins/src/fbx/java/com/jme3/scene/plugins/fbx/anim/FbxToJmeTrack.java