MBRouteDescriptionItem 成员列表

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

	endSegIdx	MBRouteDescriptionItem
-	getHandle	MBObject
	iconId	MBRouteDescriptionItem
-	initWithHandle:	MBObject
	isChild	MBRouteDescriptionItem
	length	MBRouteDescriptionItem
	position	MBRouteDescriptionItem
	startSegIdx	MBRouteDescriptionItem
	subtitle	MBRouteDescriptionItem
	title	MBRouteDescriptionItem