Parent can be null only if full ctx mode and we make an array from {@link #EMPTY} and non-empty. We merge {@link #EMPTY} by using null parent and returnState == {@link #EMPTY_RETURN_STATE}.
See Implementation
Parent can be null only if full ctx mode and we make an array from {@link #EMPTY} and non-empty. We merge {@link #EMPTY} by using null parent and returnState == {@link #EMPTY_RETURN_STATE}.