Aligns a prefab to an anchor's volume, based on custom logic.
This method is intended to be overridden a class that extends AnchorPrefabSpawner with custom logic for aligning a prefab. If not overridden, it throws a NotImplementedException.
ParametersanchorVolumeBoundsThe volume bounds of the anchor.
prefabBoundsThe bounds of the prefab.
ReturnsThe local position of the prefab defined as the difference between the anchor's pivot and the prefab's pivot.