成员的完整列表，这些成员属于 QMSBusingSegmentRoutePlan,包括所有继承而来的类成员

	direction	QMSBusingSegmentRoutePlan
	distance	QMSBusingSegmentRoutePlan
	duration	QMSBusingSegmentRoutePlan
	lines	QMSBusingSegmentRoutePlan
	mode	QMSBusingSegmentRoutePlan
	polyline	QMSBusingSegmentRoutePlan
	price	QMSBusingSegmentRoutePlan