Offset
class Offset @InternalWowApi constructor(val offset: Long, val limit: Int, val withTotal: Boolean, val totalLimit: Int? = null) : PageWindow
Records offset until offset + limit in sort order; withTotal also asks for the number of matches. A totalLimit bounds that number: the backend may stop counting after totalLimit + 1 matches, as QueryBackend.count does; null asks for the exact number.