* pattern, timing information and type of line to create. This is used
* for example in the spanningtree module which will call an XLineFactory
* to create a new XLine when it is inbound on a server link, so that it
* pattern, timing information and type of line to create. This is used
* for example in the spanningtree module which will call an XLineFactory
* to create a new XLine when it is inbound on a server link, so that it