public function oneShiftsToMany($model, $relatedKey = 'scope_id', $shifter = 'scope', $thisKey = null)
	{
		// Default the keys if not set
		$thisKey = $thisKey ?: $this->getPrimaryKey();

		return new OneShiftsToMany($this, $this->resolve($model), $thisKey, $relatedKey, $shifter);
	}