This member is added by an implicit conversion from WgbInformer[N, E] to
any2stringadd[WgbInformer[N, E]] performed by method any2stringadd in scala.Predef.
This member is added by an implicit conversion from WgbInformer[N, E] to
StringFormat[WgbInformer[N, E]] performed by method StringFormat in scala.Predef.
Extended node visitor informer for cycle detecting. This informer always returns
0
fordepth
.