GroupOfLines

We use GroupOfLine for the modeling of mixed lines. Only mixed lines have a GroupOfLines.

Table: GroupOfLines

Sub	Element	Usage	Card	Type	Description	Note
	members	mandatory	0..1	singleJourneyRefs_RelStructure	Services in GROUP.
+	LineRef	mandatory	1..1	LineRefStructure	Reference to a LINE.	one must be the main line
	MainLineRef	mandatory	0..1	LineRefStructure	Primary LINE in GROUP OF LINEs, if relevant.	The main line must exist. It hasn’t any ServiceJourneyPattern or ServiceJourneys. Those are all on the partial lines.
	GroupOfLinesType	mandatory	0..1	GroupOfLinesTypeEnumeration	Classification of GROUP OF LINES. +v1.1