// no historical members for now
class MemberStore {
	async getMember(roomId, userId) {

	}

	/* async getMemberAtSortKey(roomId, userId, sortKey) {

	} */
	// multiple members here? does it happen at same sort key?
	async setMembers(roomId, members) {

	}

	async getSortedMembers(roomId, offset, amount) {

	}
}